feto[9], font[9], tonf[9], ente[5], eten[5], neto[5], neon[4],
fet[8], tef[8], fot[8], fee[7], fen[7], nef[7], efo[7], fon[7], net[4], ten[4], eto[4], not[4], ton[4], eon[3], one[3], non[3],
ef[6], fe[6], et[3], te[3], ot[3], to[3], ee[2], en[2], eo[2], no[2], on[2],
