Set v of ZG-generators for the submodule '
(-1+x)ea
(-1+y)eb
(-1+z)ec
(-y+z)ed
(-x+y)ee
(-x+z)ef
(-1-z)ea+(-1-x)ec+(1+x)ef
(-1-y)ea+(-1-x)eb+(1+x)ee
(-1-y-yz-yzy)ea+(z+xz+zyz+xzyz)eb+(-x-y)ed+(1-z+yz-zyz)ee+(x+y+xzy+yzy)ef
(-1-z-yz-zyz)eb+(-1-y-zy-yzy)ec+(1+y)ed