bbbb bbch bbci bbdd bbdo bbfc bbrc bbrg bcbc bcbg bccc bcci bcfc bchd bcof bcor bd-r bdbc bddc bddh bdii bdog bfgf bgfc bhcc bhff bhir bhog bhoi bhor bibb bibi bibo bicc bicg bich bici bico bidi bido bidr biff bifi bigb bigc bigd bigg bigo bihi bio- bioc biog bioi birb bird birg biri biro birr bobb bobi bobo boch boco bodb bodh bodi bodo bofd boff bofh bogd bogg bogh bogi bogo bohd boho bohr boi- boid boii boob booc bood boof boog booh boor bor- bord borf borg borh bori boro borr brcb brdo brfc bric brid brig brih brio brob broc brod brog broh broo bror brrr c-bo c-cd cbbc cbcc cbcr cbdb cbdc cbdi cbdo cbfb cbfc cbgb cbid cbir cbrd cbrh ccbc cccb cccc cccf ccci ccdc ccdf ccdh ccdi ccdr ccfc ccfd ccff ccfi ccgc cchr ccic ccid ccii ccir ccob ccoc ccod ccrc ccrf ccrg ccri cd-r cdbf cddb cddr cdic cdii cdio cfbc cfbr cfcb cfcf cfco cffb cffr cfgo cfor cfrb cfrg cgcc cgcg cgfc cgro chch chci chdi chfc chfi chfr chgb chgd chib chic chid chif chig chih chir choc chod choh choi choo chor chrb chrc chrd chrf chro chrr cibc cibi cibo cicc cich cici cico cicr cidc cidg cidi cidr ciff cifg cigi cihr ciid ciii ciob cior cirb circ cirh ciri ciro cirr cobb cobh cobi cobo coch coco codd codi cofc coff cofi cogh cogi cogo coho coif coir coob cood coof cooh cor- corb corc cord corf corg cori coro corr crbc crcc crcr crdc crfc crib cric crif crig crob croc crod croh croo cror d-bo dbcc dbfc dbfo dcbc dccb dccc dcci dcdb dcfc dcgo dcii dcio dddd ddoc ddrc dfcc dfco dfrf dfri dhfc dhod dhor dibb dibo dich dici dico didi dido dif- diff digg digi digo diii dioc dior dird dirr dobb dobi doch doci doco dod- dodd dodg dodi dodo doff dog- dogg dogh dogi dogo dohc dohr doid doig doob dood doof door dorc dord dorf dori doro dorr drbc drfc drib dric drif drih drob drod drof drog droh fccf fcch fcic fcii fdic fdoc ffcc ffff ffii ffrr fghi fhci ficc fich fico fidc fidf fido fifc fiff fifi fifo figc figg figo fiii fior foch foci foco fofo fogg fogh fogi fogo fohr foid food foof for- forb ford forg fori foro forr frbc frcc frfc frib fric frid frig frio frob frog froh gbbo gbfc gc-c gcbc gccc gccf gcfc gcic gcii gcrg gdci gddb gdfr gdor gdrc gfcf gfci gfor ggfg gggg gghg ghib ghoi ghrf gibb gibh gicr gidc gidd gidh gidi gido giff gigg gigi gigo giog gioi gird girg giri giro girr gobi gobo goch gocr godi godo goff gofr gogh gogi gogo gohb goif good goof goog gooi goor gorb gord gorf gorg gori goro gorr grbr grcc grdc grib gric grid grif grig grob groc grod grof grog groh groi groo gror grrr h-ii hbcd hbfc hbic hbio hboc hcbc hccb hccc hcch hcdr hcfc hcgh hchi hcrd hdci hdfc hdgf hdif hdoc hdod hdri hgfc hggc hhgg hhhh hhof hi-c hibi hicc hich hico hidi hiff hifh hifi hifo hifr high higi hihc hihi hiho hiob hioc hird hirf hiri hiro hobo hoch hocr hodh hodi hodr hoff hogg hogh hogi hogo hoho hoid hoif hoir hood hoof hoor horc hord horg hori horo horr hrdc hrfc hrib hrid hrob hrod hrrc i-go ibdo ibfi ibid ibrc ibrd ibri ibro icbc icbd iccb iccc iccf icci icco iccr icdc icdd icfb icgc ichc ichd ichi icho ichr icoc icod icor icrc icrf icrr idcr iddo idfc idgf idgo idic idid idig idio idir idoc idog idrc idrf idro ifbb ifcd ifco ific ifid ifor ifrb ifrf ifri igbc igbo igcc igfc ighd igoo igor igri ihcc ihdr ihob ihrc ihrd iicd iiii iiio iioi iioo iirc iobi iocg ioci iod- iodd iodo iofc ioii ioio ioof iooi iooo iorg iori ircc ircd ircg irdc irdo iri- iric irid irig irio irob iroc irod iroh irrc irri obbo obid oboi obor obrh obri obro ocbc occc occi ochi ocro ocrr odbo odci oddd oddi odic odio odir odoh odoo odor ofcr ofdr off- offc offh offo offr ofgo ofid ofor ogb ogdc ogdh ogfr oggi oghi ogod ogog ogoi ogri ogro ohcc ohgr ohhi ohho ohid ohif ohio ohob ohoh oici oido oigo oiii oobi oocr oodi ooff ooho ooid oooh oooo oord orbb orbi orbo orch orci orco ordo orff orfi orgo ori- oric orid orif orig orio oro- orof oror orri orro rbbb rbbr rbgh rboh rcbc rcbo rccb rccc rcdc rcfc rcgc rchb rcic rcid rcrd rcrg rdio rdoc rfdi rffc rfic rfid rgbi rhbg rhcg rhib rhio rhob rhoc rhod rhog rhoh rib- ribo ricc rich rico ridc ridd ridi rido riff rigg righ rigi rigo riho riif riri rob- robb robi robo rocc roch roco rodd rodi rodo rofc roff rofo rogg rogh rogi rogo rohr roid roif roig roio roir roob rood roof roog rooi roor rorc rori roro rrfc rrif rrrr