ceno[5], noce[5], ocen[5], cero[5], orce[5], coro[5], nero[4], orne[4], oreo[4], noro[4],
cen[4], cne[4], noc[4], cer[4], eon[3], one[3], ono[3], ner[3], ren[3], ero[3], nor[3], oro[3],
ce[3], co[3], en[2], eo[2], no[2], on[2], er[2], re[2], or[2], ro[2],
