kobo[7], obok[7], kobz[7], kopo[6], okop[6], opok[6], wkop[6], woko[5], kozo[5], pozo[5],
bok[6], kop[5], oko[4], kwo[4], wok[4], owo[3], zoo[3],
bo[4], ko[3], ok[3], op[3], po[3], oz[2],
