bbbb bhit bhut bhuu bibb bibi bihi bihu bith bitt bitu bivi bttb btvi bubb bubi bubu buhi buit buiu but- buti butt h-ii hbit hbtu hhhh hi-v hibi hibt hibu hihi hiht hiit hiiu hiti hitt hitv hubb hubi huhi huhu huib huit huth huti hutt hutu hutv huub ibtb ihit ihub ihvh iiht iiii iiit iitt iuiu ivbv tbit tbvi thi- thtb tibi tibu tiht tihu tiit tiiu tith titi titt titu tivi ttbb tttt tubb tubu tuht tuhu tuit tuiu tuti tutt tutu tvhb tvtv ubbi ubii ubit uhti uhuh utti uttu uuuu uv-b uvvu vhhh vihi viii vith viti vitt vitu vivi vt-i vuit vuti vutv vvvv