theorem Th49: :: GFACIRC1:49

for x, y, z being set st x <> [<*y,z*>,and2a] & y <> [<*z,x*>,and2] & z <> [<*x,y*>,and2c] holds
( x in InputVertices (GFA1CarryStr (x,y,z)) & y in InputVertices (GFA1CarryStr (x,y,z)) & z in InputVertices (GFA1CarryStr (x,y,z)) )