obco[7], dobo[7], kobo[7], obok[7], codo[6], kodo[6],
cob[6], bod[6], bok[6], cod[5], doc[5], koc[5], dok[5], kod[5], odo[4], oko[4],
bo[4], co[3], do[3], od[3], ko[3], ok[3],
