bbbb bblb bibb bibi bibl bili bill bilt bilu bily bitt bitu blbt blim blit blub blum blut bly- blym bmmi bttb bubb bubi bubu buit buiu bulb buli bull bult bulu bum- bumb but- buti butt buty buyi buyl buyu byil byit bylt byul i-by ibbm ibim ibly ibml ibtb ibtl ibuy ibyi iiii iiit iitm iitt iium ilbm ilit ill- illi illt illy ilum ilut iluy ilym imbi imit imli immi immt immy itby itil itim itll itty itum itym iuiu iuty libu liii lilb lili lill lilt lilu lily limb limi liml limm limu limy litb liti litl litt litu lity liut liyl liyu llll lmii ltbl ltib luby luit luli lull lulu lumb lumi luti luyi luyt lyit lyly lymb lymm lytt mbim miii miit mili mill milt milu mily mim- mimi mimy mit- mitb miti mitm mitt mitu mity miui miyu mlii mlit mltb mlym mmii mmli mmmm mmyy mtlb mubi muil muit muli mull mulm mult mulu muly mumm mumu mumy muti mutt mutu muut mybb mybi myi- myit myl- myli myll mylt mymy tbil tbit tibi tibu tiit tiiu till tilt tily timi timm timu titi titt titu tium tiyi tlli tmil tmtt ttbb ttim ttml tttt ttul ttyl tubb tubu tuil tuim tuit tuiu tuli tull tulu tuly tumb tumi tumu tuti tutl tutt tutu tuty tuum tuyl tybi tyl- tyll tyti tytt tyty ubbi ubii ubit ubli ubly uiml ulim ulli ully ulmi ulmu ulti ultt ulul ulum umb- umbi umit umut utby util utmb utti uttu uulu uuuu yili yill yilt yiti ylli yubu yuit yuli yulu yumi yutu yuty yuyu yyyy