bodu[9], budo[9], uboi[8], bido[7], dobo[7], udoi[7], oboi[6], ooid[5],
bud[8], obu[7], bid[6], bod[6], idu[6], duo[6], udo[6], boi[5], obi[5], doi[4], ido[4], odo[4],
bu[6], ud[5], bi[4], bo[4], id[3], do[3], od[3],
