cong[7], chno[7], chon[7], soch[7], nogo[6], ogon[6], song[6],
hoc[6], och[6], gon[5], oho[5], noc[4], soc[4], ono[3], nos[3], son[3], oso[3],
go[4], ho[4], oh[4], co[3], no[2], on[2], os[2],
