nepie[6], penie[6], repie[6], neper[6], pener[6], renie[5],
pnie[5], peri[5], nerp[5],
pie[4], nep[4], pen[4], nip[4], pin[4], pni[4], per[4], rep[4], nie[3], rei[3], ner[3], ren[3], inr[3],
pe[3], pi[3], ee[2], en[2], in[2], ni[2], er[2], re[2],
