hobo[8], boki[7], kobo[7], obok[7], oboi[6],
bok[6], boi[5], obi[5], hoi[5], oho[5], kio[4], koi[4], oko[4],
bi[4], hi[4], bo[4], ho[4], oh[4], ki[3], ko[3], ok[3],
