exch2_oi_f(1,12)=0

       exch2_oi_f(2,12)=0

       exch2_oi_f(3,12)=32

       exch2_oi_f(4,12)=-32

       exch2_oi_f(1,2)=34

       exch2_oi_f(2,2)=34

       exch2_oi_f(3,2)=0

       exch2_oi_f(4,2)=32

       exch2_oi_f(5,2)=-32

       exch2_oi_f(1,3)=0

       exch2_oi_f(2,3)=34

       exch2_oi_f(3,3)=34

       exch2_oi_f(4,3)=32

       exch2_oi_f(5,3)=-32

       exch2_oi_f(1,4)=0

       exch2_oi_f(2,4)=0

       exch2_oi_f(3,4)=32

       exch2_oi_f(4,4)=-32

       exch2_oi_f(1,5)=0

       exch2_oi_f(2,5)=0

       exch2_oi_f(3,5)=32

       exch2_oi_f(4,5)=-32

       exch2_oi_f(1,1)=0

       exch2_oi_f(1,6)=34

       exch2_oi_f(2,6)=34

       exch2_oi_f(3,6)=0

       exch2_oi_f(4,6)=32

       exch2_oi_f(5,6)=-32

       exch2_oi_f(1,7)=0

       exch2_oi_f(2,7)=34

       exch2_oi_f(3,7)=34

       exch2_oi_f(2,1)=0

       exch2_oi_f(4,7)=32

       exch2_oi_f(5,7)=-32

       exch2_oi_f(1,8)=0

       exch2_oi_f(2,8)=0

       exch2_oi_f(3,8)=32

       exch2_oi_f(4,8)=-32

       exch2_oi_f(1,9)=0

       exch2_oi_f(3,1)=32

       exch2_oi_f(2,9)=0

       exch2_oi_f(3,9)=32

       exch2_oi_f(4,9)=-32

       exch2_oi_f(1,10)=34

       exch2_oi_f(2,10)=34

       exch2_oi_f(3,10)=0

       exch2_oi_f(4,10)=32

       exch2_oi_f(5,10)=-32

       exch2_oi_f(4,1)=-32

       exch2_oi_f(1,11)=0

       exch2_oi_f(2,11)=34

       exch2_oi_f(3,11)=34

       exch2_oi_f(4,11)=32

       exch2_oi_f(5,11)=-32

       INTEGER exch2_oi_f(MAX_NEIGHBOURS,NTILES)

     &        exch2_oi_f,exch2_oj_f               

       exch2_oi_f(1,127)=0

       exch2_oi_f(2,127)=0

       exch2_oi_f(3,127)=0

       exch2_oi_f(1,128)=0

       exch2_oi_f(2,128)=0

       exch2_oi_f(3,128)=0

       exch2_oi_f(2,11)=0

       exch2_oi_f(4,128)=0

       exch2_oi_f(1,129)=0

       exch2_oi_f(2,129)=0

       exch2_oi_f(3,129)=0

       exch2_oi_f(4,129)=0

       exch2_oi_f(1,130)=0

       exch2_oi_f(2,130)=0

       exch2_oi_f(3,11)=0

       exch2_oi_f(3,130)=32

       exch2_oi_f(4,130)=0

       exch2_oi_f(1,131)=0

       exch2_oi_f(2,131)=0

       exch2_oi_f(3,131)=0

       exch2_oi_f(4,131)=-32

       exch2_oi_f(1,132)=0

       exch2_oi_f(4,11)=0

       exch2_oi_f(2,132)=0

       exch2_oi_f(3,132)=0

       exch2_oi_f(4,132)=0

       exch2_oi_f(1,133)=0

       exch2_oi_f(2,133)=0

       exch2_oi_f(3,133)=0

       exch2_oi_f(4,133)=0

       exch2_oi_f(1,134)=0

       exch2_oi_f(2,134)=0

       exch2_oi_f(3,134)=32

       exch2_oi_f(4,134)=0

       exch2_oi_f(1,135)=0

       exch2_oi_f(2,135)=0

       exch2_oi_f(3,135)=0

       exch2_oi_f(4,135)=-32

       exch2_oi_f(1,136)=0

       exch2_oi_f(2,136)=0

       exch2_oi_f(3,136)=0

       exch2_oi_f(1,12)=0

       exch2_oi_f(4,136)=0

       exch2_oi_f(1,137)=0

       exch2_oi_f(2,137)=0

       exch2_oi_f(3,137)=0

       exch2_oi_f(1,138)=0

       exch2_oi_f(2,138)=0

       exch2_oi_f(3,138)=32

       exch2_oi_f(4,138)=0

       exch2_oi_f(2,12)=0

       exch2_oi_f(1,139)=0

       exch2_oi_f(2,139)=0

       exch2_oi_f(3,139)=0

       exch2_oi_f(4,139)=-32

       exch2_oi_f(1,140)=0

       exch2_oi_f(2,140)=0

       exch2_oi_f(3,140)=0

       exch2_oi_f(3,12)=32

       exch2_oi_f(1,141)=0

       exch2_oi_f(2,141)=0

       exch2_oi_f(3,141)=32

       exch2_oi_f(1,142)=34

       exch2_oi_f(2,142)=34

       exch2_oi_f(3,142)=0

       exch2_oi_f(4,142)=0

       exch2_oi_f(4,12)=0

       exch2_oi_f(5,142)=-32

       exch2_oi_f(1,143)=34

       exch2_oi_f(2,143)=34

       exch2_oi_f(3,143)=0

       exch2_oi_f(4,143)=0

       exch2_oi_f(1,144)=34

       exch2_oi_f(2,144)=34

       exch2_oi_f(3,144)=0

       exch2_oi_f(4,144)=32

       exch2_oi_f(1,145)=0

       exch2_oi_f(2,145)=34

       exch2_oi_f(3,145)=34

       exch2_oi_f(4,145)=0

       exch2_oi_f(5,145)=-32

       exch2_oi_f(1,146)=0

       exch2_oi_f(2,146)=34

       exch2_oi_f(3,146)=34

       exch2_oi_f(4,146)=0

       exch2_oi_f(1,13)=0

       exch2_oi_f(5,146)=0

       exch2_oi_f(1,147)=0

       exch2_oi_f(2,147)=34

       exch2_oi_f(3,147)=34

       exch2_oi_f(4,147)=0

       exch2_oi_f(5,147)=0

       exch2_oi_f(1,148)=0

       exch2_oi_f(2,148)=34

       exch2_oi_f(2,13)=0

       exch2_oi_f(3,148)=34

       exch2_oi_f(4,148)=32

       exch2_oi_f(5,148)=0

       exch2_oi_f(1,149)=0

       exch2_oi_f(2,149)=0

       exch2_oi_f(3,149)=0

       exch2_oi_f(4,149)=-32

       exch2_oi_f(3,13)=0

       exch2_oi_f(1,150)=0

       exch2_oi_f(2,150)=0

       exch2_oi_f(3,150)=0

       exch2_oi_f(4,150)=0

       exch2_oi_f(1,151)=0

       exch2_oi_f(2,151)=0

       exch2_oi_f(3,151)=0

       exch2_oi_f(4,151)=0

       exch2_oi_f(1,152)=0

       exch2_oi_f(2,152)=0

       exch2_oi_f(3,152)=32

       exch2_oi_f(4,152)=0

       exch2_oi_f(1,153)=0

       exch2_oi_f(2,153)=0

       exch2_oi_f(3,153)=0

       exch2_oi_f(4,153)=-32

       exch2_oi_f(1,154)=0

       exch2_oi_f(2,154)=0

       exch2_oi_f(1,14)=0

       exch2_oi_f(3,154)=0

       exch2_oi_f(4,154)=0

       exch2_oi_f(1,155)=0

       exch2_oi_f(2,155)=0

       exch2_oi_f(3,155)=0

       exch2_oi_f(4,155)=0

       exch2_oi_f(1,156)=0

       exch2_oi_f(2,14)=0

       exch2_oi_f(2,156)=0

       exch2_oi_f(3,156)=32

       exch2_oi_f(4,156)=0

       exch2_oi_f(1,157)=0

       exch2_oi_f(2,157)=0

       exch2_oi_f(3,157)=0

       exch2_oi_f(4,157)=-32

       exch2_oi_f(1,158)=0

       exch2_oi_f(3,14)=0

       exch2_oi_f(2,158)=0

       exch2_oi_f(3,158)=0

       exch2_oi_f(4,158)=0

       exch2_oi_f(1,159)=0

       exch2_oi_f(2,159)=0

       exch2_oi_f(3,159)=0

       exch2_oi_f(4,159)=0

       exch2_oi_f(4,14)=0

       exch2_oi_f(1,160)=0

       exch2_oi_f(2,160)=0

       exch2_oi_f(3,160)=32

       exch2_oi_f(4,160)=0

       exch2_oi_f(1,161)=0

       exch2_oi_f(2,161)=0

       exch2_oi_f(3,161)=0

       exch2_oi_f(4,161)=-32

       exch2_oi_f(1,162)=0

       exch2_oi_f(2,162)=0

       exch2_oi_f(3,162)=0

       exch2_oi_f(4,162)=0

       exch2_oi_f(1,163)=0

       exch2_oi_f(2,163)=0

       exch2_oi_f(3,163)=0

       exch2_oi_f(4,163)=0

       exch2_oi_f(1,164)=0

       exch2_oi_f(2,164)=0

       exch2_oi_f(1,15)=0

       exch2_oi_f(3,164)=32

       exch2_oi_f(4,164)=0

       exch2_oi_f(1,165)=0

       exch2_oi_f(2,165)=0

       exch2_oi_f(3,165)=0

       exch2_oi_f(4,165)=-32

       exch2_oi_f(1,166)=0

       exch2_oi_f(2,15)=0

       exch2_oi_f(2,166)=0

       exch2_oi_f(3,166)=0

       exch2_oi_f(4,166)=0

       exch2_oi_f(1,167)=0

       exch2_oi_f(2,167)=0

       exch2_oi_f(3,167)=0

       exch2_oi_f(4,167)=0

       exch2_oi_f(1,168)=0

       exch2_oi_f(3,15)=0

       exch2_oi_f(2,168)=0

       exch2_oi_f(3,168)=32

       exch2_oi_f(4,168)=0

       exch2_oi_f(1,169)=0

       exch2_oi_f(2,169)=0

       exch2_oi_f(3,169)=0

       exch2_oi_f(4,169)=-32

       exch2_oi_f(4,15)=0

       exch2_oi_f(1,170)=0

       exch2_oi_f(2,170)=0

       exch2_oi_f(3,170)=0

       exch2_oi_f(4,170)=0

       exch2_oi_f(1,171)=0

       exch2_oi_f(2,171)=0

       exch2_oi_f(3,171)=0

       exch2_oi_f(4,171)=0

       exch2_oi_f(1,172)=0

       exch2_oi_f(2,172)=0

       exch2_oi_f(3,172)=32

       exch2_oi_f(4,172)=0

       exch2_oi_f(1,173)=0

       exch2_oi_f(2,173)=0

       exch2_oi_f(3,173)=0

       exch2_oi_f(4,173)=-32

       exch2_oi_f(1,174)=0

       exch2_oi_f(2,174)=0

       exch2_oi_f(1,16)=0

       exch2_oi_f(3,174)=0

       exch2_oi_f(4,174)=0

       exch2_oi_f(1,175)=0

       exch2_oi_f(2,175)=0

       exch2_oi_f(3,175)=0

       exch2_oi_f(4,175)=0

       exch2_oi_f(1,176)=0

       exch2_oi_f(2,16)=32

       exch2_oi_f(2,176)=0

       exch2_oi_f(3,176)=32

       exch2_oi_f(4,176)=0

       exch2_oi_f(3,16)=0

       exch2_oi_f(1,17)=0

       exch2_oi_f(2,17)=0

       exch2_oi_f(3,17)=0

       exch2_oi_f(4,17)=-32

       exch2_oi_f(1,18)=0

       exch2_oi_f(2,18)=0

       exch2_oi_f(3,18)=0

       exch2_oi_f(4,18)=0

       exch2_oi_f(1,19)=0

       exch2_oi_f(2,19)=0

       exch2_oi_f(1,20)=0

       exch2_oi_f(2,20)=0

       exch2_oi_f(3,20)=0

       exch2_oi_f(4,20)=-32

       exch2_oi_f(1,21)=0

       exch2_oi_f(2,21)=0

       exch2_oi_f(3,21)=0

       exch2_oi_f(1,22)=0

       exch2_oi_f(2,22)=32

       exch2_oi_f(1,23)=0

       exch2_oi_f(2,23)=0

       exch2_oi_f(3,23)=0

       exch2_oi_f(4,23)=-32

       exch2_oi_f(1,24)=0

       exch2_oi_f(2,24)=0

       exch2_oi_f(3,24)=0

       exch2_oi_f(4,24)=0

       exch2_oi_f(1,25)=0

       exch2_oi_f(2,25)=0

       exch2_oi_f(3,25)=0

       exch2_oi_f(1,26)=0

       exch2_oi_f(2,26)=0

       exch2_oi_f(1,1)=0

       exch2_oi_f(3,26)=32

       exch2_oi_f(4,26)=0

       exch2_oi_f(1,27)=34

       exch2_oi_f(2,27)=34

       exch2_oi_f(3,27)=0

       exch2_oi_f(4,27)=0

       exch2_oi_f(5,27)=-32

       exch2_oi_f(1,28)=34

       exch2_oi_f(2,1)=0

       exch2_oi_f(2,28)=34

       exch2_oi_f(3,28)=0

       exch2_oi_f(4,28)=0

       exch2_oi_f(5,28)=0

       exch2_oi_f(1,29)=34

       exch2_oi_f(2,29)=34

       exch2_oi_f(3,29)=0

       exch2_oi_f(4,29)=0

       exch2_oi_f(3,1)=0

       exch2_oi_f(5,29)=0

       exch2_oi_f(1,30)=34

       exch2_oi_f(2,30)=0

       exch2_oi_f(3,30)=0

       exch2_oi_f(1,31)=0

       exch2_oi_f(2,31)=34

       exch2_oi_f(3,31)=34

       exch2_oi_f(4,31)=0

       exch2_oi_f(4,1)=-32

       exch2_oi_f(5,31)=-32

       exch2_oi_f(1,32)=0

       exch2_oi_f(2,32)=34

       exch2_oi_f(3,32)=34

       exch2_oi_f(4,32)=0

       exch2_oi_f(5,32)=0

       exch2_oi_f(1,33)=0

       exch2_oi_f(2,33)=34

       exch2_oi_f(3,33)=34

       exch2_oi_f(4,33)=0

       exch2_oi_f(5,33)=0

       exch2_oi_f(1,34)=34

       exch2_oi_f(2,34)=34

       exch2_oi_f(3,34)=32

       exch2_oi_f(4,34)=0

       exch2_oi_f(1,35)=0

       exch2_oi_f(2,35)=0

       exch2_oi_f(3,35)=0

       exch2_oi_f(1,2)=0

       exch2_oi_f(4,35)=-32

       exch2_oi_f(1,36)=0

       exch2_oi_f(2,36)=0

       exch2_oi_f(3,36)=0

       exch2_oi_f(4,36)=0

       exch2_oi_f(1,37)=0

       exch2_oi_f(2,37)=0

       exch2_oi_f(2,2)=0

       exch2_oi_f(3,37)=0

       exch2_oi_f(1,38)=0

       exch2_oi_f(2,38)=0

       exch2_oi_f(3,38)=0

       exch2_oi_f(4,38)=-32

       exch2_oi_f(1,39)=0

       exch2_oi_f(2,39)=0

       exch2_oi_f(3,2)=0

       exch2_oi_f(3,39)=0

       exch2_oi_f(4,39)=0

       exch2_oi_f(1,40)=0

       exch2_oi_f(2,40)=0

       exch2_oi_f(3,40)=0

       exch2_oi_f(4,40)=0

       exch2_oi_f(1,41)=0

       exch2_oi_f(2,41)=32

       exch2_oi_f(4,2)=0

       exch2_oi_f(3,41)=0

       exch2_oi_f(1,42)=0

       exch2_oi_f(2,42)=0

       exch2_oi_f(3,42)=0

       exch2_oi_f(4,42)=-32

       exch2_oi_f(1,43)=0

       exch2_oi_f(2,43)=0

       exch2_oi_f(3,43)=0

       exch2_oi_f(4,43)=0

       exch2_oi_f(1,44)=0

       exch2_oi_f(2,44)=0

       exch2_oi_f(3,44)=0

       exch2_oi_f(4,44)=0

       exch2_oi_f(1,45)=0

       exch2_oi_f(2,45)=0

       exch2_oi_f(3,45)=32

       exch2_oi_f(4,45)=0

       exch2_oi_f(1,3)=0

       exch2_oi_f(1,46)=0

       exch2_oi_f(2,46)=0

       exch2_oi_f(3,46)=0

       exch2_oi_f(1,47)=0

       exch2_oi_f(2,47)=0

       exch2_oi_f(3,47)=0

       exch2_oi_f(4,47)=0

       exch2_oi_f(2,3)=0

       exch2_oi_f(1,48)=0

       exch2_oi_f(2,48)=0

       exch2_oi_f(3,48)=0

       exch2_oi_f(4,48)=0

       exch2_oi_f(1,49)=0

       exch2_oi_f(2,49)=0

       exch2_oi_f(3,49)=32

       exch2_oi_f(4,49)=0

       exch2_oi_f(3,3)=0

       exch2_oi_f(1,50)=0

       exch2_oi_f(2,50)=0

       exch2_oi_f(3,50)=0

       exch2_oi_f(4,50)=-32

       exch2_oi_f(1,51)=0

       exch2_oi_f(2,51)=0

       exch2_oi_f(3,51)=0

       exch2_oi_f(4,51)=0

       exch2_oi_f(4,3)=0

       exch2_oi_f(1,52)=0

       exch2_oi_f(2,52)=0

       exch2_oi_f(3,52)=0

       exch2_oi_f(1,53)=0

       exch2_oi_f(2,53)=0

       exch2_oi_f(3,53)=32

       exch2_oi_f(4,53)=0

       exch2_oi_f(1,54)=0

       exch2_oi_f(2,54)=0

       exch2_oi_f(3,54)=-32

       exch2_oi_f(1,55)=0

       exch2_oi_f(2,55)=0

       exch2_oi_f(1,56)=0

       exch2_oi_f(2,56)=0

       exch2_oi_f(3,56)=32

       exch2_oi_f(1,4)=0

       exch2_oi_f(1,57)=0

       exch2_oi_f(2,57)=0

       exch2_oi_f(3,57)=32

       exch2_oi_f(1,58)=0

       exch2_oi_f(2,58)=0

       exch2_oi_f(3,58)=32

       exch2_oi_f(1,59)=0

       exch2_oi_f(2,4)=0

       exch2_oi_f(2,59)=-32

       exch2_oi_f(1,60)=0

       exch2_oi_f(2,60)=0

       exch2_oi_f(3,60)=32

       exch2_oi_f(1,61)=0

       exch2_oi_f(2,61)=0

       exch2_oi_f(3,61)=0

       exch2_oi_f(4,61)=-32

       exch2_oi_f(3,4)=32

       exch2_oi_f(1,62)=0

       exch2_oi_f(2,62)=0

       exch2_oi_f(3,62)=0

       exch2_oi_f(1,63)=0

       exch2_oi_f(2,63)=0

       exch2_oi_f(3,63)=0

       exch2_oi_f(4,4)=0

       exch2_oi_f(1,64)=0

       exch2_oi_f(2,64)=0

       exch2_oi_f(3,64)=32

       exch2_oi_f(4,64)=0

       exch2_oi_f(1,65)=0

       exch2_oi_f(2,65)=0

       exch2_oi_f(3,65)=0

       exch2_oi_f(4,65)=-32

       exch2_oi_f(1,66)=0

       exch2_oi_f(2,66)=0

       exch2_oi_f(3,66)=0

       exch2_oi_f(4,66)=0

       exch2_oi_f(1,67)=0

       exch2_oi_f(2,67)=0

       exch2_oi_f(3,67)=0

       exch2_oi_f(4,67)=0

       exch2_oi_f(1,68)=0

       exch2_oi_f(2,68)=0

       exch2_oi_f(1,5)=0

       exch2_oi_f(3,68)=32

       exch2_oi_f(4,68)=0

       exch2_oi_f(1,69)=0

       exch2_oi_f(2,69)=0

       exch2_oi_f(3,69)=0

       exch2_oi_f(4,69)=-32

       exch2_oi_f(1,70)=0

       exch2_oi_f(2,5)=0

       exch2_oi_f(2,70)=0

       exch2_oi_f(3,70)=0

       exch2_oi_f(4,70)=0

       exch2_oi_f(1,71)=0

       exch2_oi_f(2,71)=0

       exch2_oi_f(3,71)=0

       exch2_oi_f(4,71)=0

       exch2_oi_f(3,5)=0

       exch2_oi_f(1,72)=0

       exch2_oi_f(2,72)=0

       exch2_oi_f(3,72)=32

       exch2_oi_f(4,72)=0

       exch2_oi_f(1,73)=0

       exch2_oi_f(2,73)=0

       exch2_oi_f(3,73)=0

       exch2_oi_f(4,73)=-32

       exch2_oi_f(4,5)=-32

       exch2_oi_f(1,74)=0

       exch2_oi_f(2,74)=0

       exch2_oi_f(3,74)=0

       exch2_oi_f(4,74)=0

       exch2_oi_f(1,75)=0

       exch2_oi_f(2,75)=0

       exch2_oi_f(3,75)=0

       exch2_oi_f(1,76)=0

       exch2_oi_f(2,76)=0

       exch2_oi_f(3,76)=32

       exch2_oi_f(4,76)=0

       exch2_oi_f(1,77)=0

       exch2_oi_f(2,77)=0

       exch2_oi_f(3,77)=0

       exch2_oi_f(4,77)=-32

       exch2_oi_f(1,78)=0

       exch2_oi_f(2,78)=0

       exch2_oi_f(3,78)=0

       exch2_oi_f(1,6)=0

       exch2_oi_f(1,79)=0

       exch2_oi_f(2,79)=0