bbbb bbdd bbdo bblb bdii bibb bibi bibl bibo bidi bido bidu bild bili bill bilo bilt bilu bio- bioi biol biot biou bitd bito bitt bitu blbt blio blit blob blod bloo blot blou blub blud blut bobb bobi bobo bobu bodb bodi bodo bodu boi- boid boii boil boit boiu bold boli boll bolo bolt bolu boob bood bool boot botb botd boti boto bott boud boul bout btdt btob bttb bubb bubi bubo bubu budb budd budi budl budo budu buid buit buiu bulb buld buli bull bult bulu buol but- buti buto butt d-bo dbit dbtt dddd ddot ddub dibb dibo didi dido didu diii dili dill dilo diol diot diou diti dito ditt dlbd dlib dlii dlil dlit dobb dobi dobl dobu dod- dodd dodi dodo doid doil doit dold doli doll dolo dolt dolu doob dood dool doot dotd doti doto dott doub doud doul dout dtot dub- dubb dubu dudd dudo dudu duid duil duit duli dull dulo dult dulu duo- duul duut ibdo ibid ibot ibtb ibtl iddo idid idil idio idli idol idub iduo iiii iiio iiit iioi iioo iitt ilio ilit ill- illd illi illo illt iloo ilot ilud ilut iobi iod- iodd iodo ioii ioio ioit iolo iooi iooo ioto itdo itil itll itoi itol itoo itou itto iuiu libo libu lidb lidl lido liii lilb lili lill lilo lilt lilu lio- liod litb litd liti litl lito litt litu liut lldb llll llod lloo llud lob- lobb lobi lobo lodi loid loit loiu lold loli loll lolo loob lood lool loot lotd loti lotl loto lott loud loui loul lout louu ltbl ltib ludd ludi ludo luit luli lull lulu luti obbo obdt obid obit oblu oboi obol obot obtd odbo oddd oddi odio odiu odoo odot odou odtu oido oiii oiti olbo oldb olib olid olio olit olli ollo olot oltu oobi oodi ooid oold oolo oooo ootb otbd otit oto- otoo otti otto ottu ouii ouit ould oulu out- outb outi outo ouu- tbil tbit tddb tdil tibi tibu tidd tiit tiiu tild till tilo tilt tiou titi tito titt titu tlli tobi tobo tobt tobu todd todi todo todt todu toid toil toit tol- told toli toll tolo tolt tolu tood tool toot totd toti toto tott toui toul tout ttbb tttt ttul tubb tubo tubu tudi tudu tuil tuit tuiu tuli tull tulo tulu tuti tutl tuto tutt tutu tuuo ubbi ubbo ubid ubii ubit ubli ublo ubod ubud uddi udid udoo udot ulli ullo ulo- ulti ulto ultt ulul utid util utti utto uttu uulu uuuu