chno[7], chon[7], hond[7], donn[5],
hoc[6], och[6], cod[5], doc[5], koc[5], dok[5], kod[5], noc[4], dno[4], don[4], nok[4], non[3],
ho[4], oh[4], co[3], do[3], od[3], ko[3], ok[3], no[2], on[2],
