bbbb bbdd bbdo bdii bibb bibi bibo bidi bido bio- bioi biot bitd bito bitt biw- bobb bobi bobo bobw bodb bodi bodo boi- boid boii boit boob bood boot boow botb botd boti boto bott botw bowd bowi bowt btdt btob bttb btwo d-bo dbit dbtt dddd ddot dibb dibo didi dido diii diot diti dito ditt dobb dobi dod- dodd dodi dodo doid doit doob dood doot dotd doti doto dott dowb dowd dowt dtot dwdd dwi- dwid dwti dwww ibdo ibid ibot ibtb iddo idid idio iiii iiio iiit iioi iioo iitt iiwi iobi iod- iodd iodo ioii ioio ioit iooi iooo ioto itdo itoi itoo itto iwiw obbo obdt obid obit oboi obot obtd odbo oddd oddi odio odoo odot oido oiii oiti oobi oodi ooid oooo ootb ootw otbd otit oto- otoo otow otti otto otwo owow owt- owtt tbit tddb tibi tidd tiit titi tito titt tiwi tobi tobo tobt todd todi todo todt toid toit tood toot totd toti toto tott ttbb tttt twbt twdt twi- twib twit two- twob twod twoo twot wbbb wbbd wbbi wbbo wbbt wbbw wbdt wbib wbio wbiw wbob wboi wbow wbti wbto wbtt wbtw wbwb wbwi wbwo wbwt wdbd wdbo wdbt wddd wddo wddw wdod wdow wdtb wdti wdtw wdwd wibb wibi wibt wibw widi widw wiii wiit wiob wiod wioi wioo wiot witi witt wiwi wobb wobo wobt wodb wodd wodi wodt woid woio woob wood woot woow wotb wott wotw wowb wowi wowo wowt woww wtbb wtbi wtbo wtib wtid wtob wtod wtot wtow wttb wtti wtto wttt wttw wtwb wtwo wtwt wtww wwbb wwbd wwbt wwdb wwdw wwib wwii wwio wwod wwot wwow wwtd wwti wwtw wwwi wwww