fere[8], free[8], crep[6], erce[5], nerp[5], wece[5], werp[5], nerw[4],
pfe[8], fee[7], fen[7], nef[7], ref[7], cep[5], cen[4], cne[4], nep[4], pen[4], cer[4], per[4], rep[4], cew[4], ner[3], ren[3], ewe[3], wen[3], rew[3], wre[3],
ef[6], fe[6], ce[3], pe[3], ee[2], en[2], er[2], re[2], ew[2], we[2],
