theorem Th18: :: GFACIRC1:18

for x, y, z being set st x <> [<*y,z*>,and2] & y <> [<*z,x*>,and2] & z <> [<*x,y*>,and2] holds
( x in InputVertices (GFA0CarryStr (x,y,z)) & y in InputVertices (GFA0CarryStr (x,y,z)) & z in InputVertices (GFA0CarryStr (x,y,z)) )