neper[6], pener[6], reper[6], rener[5],
nerp[5], pens[5], pers[5], eser[4],
nep[4], pen[4], per[4], rep[4], prr[4], sep[4], ner[3], ren[3], sen[3], ser[3],
pe[3], ee[2], en[2], er[2], re[2], es[2], se[2],
