chno[7], chon[7], hond[7], pond[6], czop[6], zond[5],
hoc[6], och[6], hop[6], cod[5], doc[5], pod[5], noc[4], dno[4], don[4], doz[4], zon[3],
ho[4], oh[4], co[3], do[3], od[3], op[3], po[3], no[2], on[2], oz[2],
