myFace = exch2_myFace(myTile)
myFace = bi
IF ( MOD(myFace,2).EQ.1 ) THEN
IF ( myFace.EQ.4 ) THEN
ELSEIF ( myFace.EQ.6 ) THEN
IF ( myFace.EQ.1 ) THEN
ELSEIF ( myFace.EQ.5 ) THEN
INTEGER myFace
IF ( myFace.EQ.2 ) THEN
ELSEIF ( myFace.EQ.4 ) THEN
ELSEIF ( myFace.EQ.3 ) THEN