kopn[6], rock[6], proc[6], kopr[6], krop[6], kwoc[6], wkop[6], kron[5], wron[4],
koc[5], kop[5], noc[4], nok[4], kor[4], kro[4], okr[4], ork[4], rok[4], por[4], pro[4], rop[4], kwo[4], wok[4], nor[3], won[3], rwo[3],
co[3], ko[3], ok[3], op[3], po[3], no[2], on[2], or[2], ro[2],
