bbbb bbdd bbdo bblb bd-r bdii bffl bftt bibb bibi bibl bibo bidi bido bidr biff bifi bild bili bill bilo bilt bio- bioi biol biot birb bird biri birl biro birr birt bitd bito bitt blbt bldr blio blir blit blob blod bloo blot bobb bobi bobo bodb bodi bodo bofd boff boi- boid boii boil boit bold boli boll bolo bolt boob bood boof bool boor boot bor- bord borf bori boro borr bort botb botd boti boto bott brdo brdt brid bril brio brit brob brod brol broo bror brot brrr btdt btob btor btrt bttb d-bo dbfo dbit dbtt dddd ddot dfdt dfrf dfri dftr dibb dibo didi dido dif- diff diii dilf dili dill dilo diol dior diot dird dirl dirr dirt diti dito ditt dlbd dlib dlii dlil dlit dobb dobi dobl dod- dodd dodi dodo doff doid doil doit dold dolf doli doll dolo dolt doob dood doof dool door doot dord dorf dori doro dorr dort dotd doti doto dott drib drif dril drit drob drod drof drol drot dtor dtot dtrl fdlr fdot fdti fdtl ffff ffii ffrr fftf fidf fido fiff fifi fifo fift fiii fiil fild fili fill filo fior fiti fitt fldr flid flii flit flob flod floo flor flot fobt fofo foid foil fold foli foll folo folr folt food foof fool foot for- forb ford fori forl foro forr fort foti foto fott frib frid fril frio frit frob frol frot ft-l ftdi ftii ftlb ibdo ibfi ibid ibot ibrd ibri ibro ibtb ibtl iddo idid idil idio idir idli idol idrf idro ifbb ifid ifil ifit ifor ifrb ifrf ifri ifto iiii iiio iiit iioi iioo iitr iitt ilio ilir ilit ill- illd illi illo illt iloo ilot iobi iod- iodd iodo ioii ioio ioit iolo ioof iooi iooo iori iotf ioto irdo iri- irid iril irio irlb irob irod irri irtf irti itdo itif itil itll itof itoi itol itoo itor itrf itri ittf itto lblr lbrt ldif lfrd libo libr lidb lidl lido liff lifl lifo lift liii liir lilb lili lill lilo lilt lio- liod lior lird liri lirl liro lirr lirt litb litd liti litl lito litr litt lldb llll llod lloo lob- lobb lobi lobo lodi loff lofi loft loid loif loir loit lold loli loll lolo loob lood loof lool loor loot lord lori loro lotd loti lotl loto lotr lott lrdd lrif lroi lrrr ltbf ltbl ltib lttr obbo obdt obid obit oboi obol obor obot obri obro obtd odbo oddd oddi odio odir odoo odor odot odrl ofdr off- offo offr ofid ofit ofor oido oiii oirt oiti olbo oldb olib olid olio olit olli ollo olof olor olot oobi oodi ooff ooid oold oolo oooo oord oort ootb orbb orbi orbo ordo orff orfi ori- orid orif oril orio orit orlo oro- orof oror orot orri orro orto otbd otif otit oto- otof otoo otor otro otti otto rbbb rbbr rdio rfdi rffl rfid rib- ribo ridd ridi rido riff rift riif rill rilo riol riot riri riti ritl rito ritt rldt rlif rob- robb robi robo robt rodd rodi rodo roff rofl rofo roid roif roil roio roir roit rold rolf roll rolo rolt roob rood roof rooi rool roor root rori roro rort roti rotl roto rotr rott rrif rrrr rtbf rtdt rtfb rtlt tbil tbit tbrb tddb tdff tdil tdor tdri tfot tibi tidd tiff tifo tift tiit tild till tilo tilr tilt tirb tird tiri tirl tiro tirr titi tito titt tldr tlli tobi tobo tobt todd todi todo todt toff tofi tofo toft toid toil toit tol- told toli toll tolo tolt tood toof tool toor toot tord torf tori toro torr tort totd toti toto totr tott trfd trfr tri- trib trif tril trio trit trod troi troo trot trtr ttbb ttff tttt