chno[7], chon[7], kopn[6], kwoc[6], wkop[6],
hoc[6], och[6], hop[6], koc[5], kop[5], noc[4], nok[4], kwo[4], wok[4], won[3],
ho[4], oh[4], co[3], ko[3], ok[3], op[3], po[3], no[2], on[2],
