chno[7], chon[7], kopn[6],
hoj[7], hoc[6], och[6], hop[6], koc[5], jon[5], kop[5], noc[4], nok[4],
ho[4], oh[4], oj[4], co[3], ko[3], ok[3], op[3], po[3], no[2], on[2],
