bbbb bblb bibb bibi bibl bigb bigg bigt bigu bili bill bilt bilu bily bitt bitu blbt blit blub blut bly- bttb bubb bubi bubu bugg bugi buit buiu bulb bulg buli bull bult bulu but- buti butt buty buyi buyl buyu bygg byil byit bylt byul ggbt gggg gibb giby gigg gigi gilg gili gill gilt gli- glib glit glub glug glui glut glyg glyt glyu gubb gubi gubu guby gugb gugg gugi gugu guib guil gulb guli gull gult gulu guly guti gutt gutu guty guyu gyil gyll gylt gytt gyuu i-by ibly ibtb ibtl ibuy ibyi iggy igil igli iglu igly iiii iiit iitt ilit ill- illi illt illy ilut iluy itby itil itll itty iuiu iuty lbgt lbug lgbt lgbu libu ligg ligi liig liii lilb lilg lili lill lilt lilu lily litb liti litl litt litu lity liut liyl liyu llll ltbl ltib luby lugg lugi lugu lugy luit luli lull lulu luti luyi luyt lyit lyly lytt tbil tbit tibi tibu tigi tigy tiit tiiu till tilt tily titi titt titu tiyi tlli ttbb tttt ttul ttyl tubb tubu tugg tugu tuig tuil tuit tuiu tuli tull tulu tuly tuti tutl tutt tutu tuty tuyl tybi tyl- tyll tyti tytt tyty ubbi ubii ubit ubli ubly uggt ugli ugly uguu ulli ully ulti ultt ulul utby util utti uttu utug uulu uuuu yili yill yilt yiti ylli yubu yugg yugi yugu yuit yuli yulu yutu yuty yuyu yyyy