obce[7], obco[7], bono[6], obon[6], ceno[5], noce[5], ocen[5],
cob[6], ben[5], bon[5], cen[4], cne[4], noc[4], eon[3], one[3], ono[3],
be[4], bo[4], ce[3], co[3], en[2], eo[2], no[2], on[2],
