NF = IFAC(2)
DO 116 K1=1,NF
DO 111 K1=1,NF
KH = NF-K1
NF = 0
105 NF = NF+1
IFAC(NF+2) = NTRY
IF (NF .EQ. 1) GO TO 107
DO 106 I=2,NF
IB = NF-I+2
IFAC(2) = NF
NFM1 = NF-1