//4p-4 algebras
<a,b,c|bac,pa-ba,pb-cb,pc+ba-ca,class=3>
<a,b,c|bac-bab,pa-ba,pb-cb,pc+ba-ca-xbab,class=3>(all x)
<a,b,c|bac,pa-ba,pb-cb,pc-3ba-ca,class=3>
<a,b,c|bac+bab,pa-ba,pb-cb,pc-3ba-ca,class=3>
<a,b,c|bac-zbab,pa-ba,pb-cb,pc-xba-ca,class=3>(x ne -1,3, See Notes6.114)
