chno[7], chon[7], soch[7], ozon[4], zono[4], znos[4],
hoc[6], och[6], oho[5], noc[4], soc[4], ono[3], nos[3], son[3], oso[3], zon[3], zoo[3],
ho[4], oh[4], co[3], no[2], on[2], os[2], oz[2],
