piet[6], pite[6], step[6], tips[6], pies[5], psie[5], siep[5], spie[5], seps[5], spis[5], ssie[4],
pet[5], pit[5], pst[5], pie[4], sep[4], psi[4], pss[4], set[4], sit[4], tss[4], eis[3], sie[3],
pe[3], pi[3], et[3], te[3], ts[3], es[2], se[2], si[2],
