hobo[8], chno[7], chon[7], obco[7], bocz[7], bono[6], obon[6], ozon[4], zono[4],
cob[6], hoc[6], och[6], bon[5], oho[5], noc[4], ono[3], zon[3], zoo[3],
bo[4], ho[4], oh[4], co[3], no[2], on[2], oz[2],
