for x, y, z being set holds
( [<*x,y*>,xor2] in InnerVertices (BitGFA3Str (x,y,z)) & GFA3AdderOutput (x,y,z) in InnerVertices (BitGFA3Str (x,y,z)) & [<*x,y*>,nor2] in InnerVertices (BitGFA3Str (x,y,z)) & [<*y,z*>,nor2] in InnerVertices (BitGFA3Str (x,y,z)) & [<*z,x*>,nor2] in InnerVertices (BitGFA3Str (x,y,z)) & GFA3CarryOutput (x,y,z) in InnerVertices (BitGFA3Str (x,y,z)) )