loch[8], olch[8], chno[7], chon[7], soch[7],
hoc[6], och[6], hol[6], noc[4], soc[4], los[4], ols[4], sol[4], non[3], nos[3], son[3],
ho[4], oh[4], co[3], no[2], on[2], os[2],
