duol[8], lodu[8], sodu[7], losu[7], olsu[7], solu[7], soul[7], sold[6],
lud[7], duo[6], udo[6], dol[5], sou[5], los[4], ols[4], sol[4],
ud[5], lu[5], ul[5], su[4], do[3], od[3], os[2],
