Data:L11n450/Multivariable Alexander

$-vu^{3}+vwu^{3}-wu^{3}+vxu^{3}-vwxu^{3}+u^{3}+2vu^{2}-2vwu^{2}+3wu^{2}-3vxu^{2}+3vwxu^{2}-wxu^{2}+xu^{2}-3u^{2}-vu+vwu-3wu+3vxu-3vwxu+2wxu-2xu+3u+w-vx+vwx-wx+x-1$