celo[6], cole[6], ocel[6], ceno[5], noce[5], ocen[5], enol[5],
cel[5], cle[5], lec[5], cen[4], cne[4], len[4], ole[4], noc[4], eon[3], one[3],
ce[3], el[3], co[3], en[2], eo[2], no[2], on[2],
