chnom[9], ochom[9], mocno[7], nocom[7],
chno[7], chon[7], homo[7], mono[5], moon[5],
hoc[6], och[6], mho[6], ohm[6], com[5], moc[5], oho[5], noc[4], mon[4], nom[4], omo[4], ono[3],
hm[5], ho[4], oh[4], co[3], om[3], no[2], on[2],
