bbbb bbch bbci bbdd bbdo bbrc bcbc bccc bcci bchd bcor bd-r bdbc bddc bddh bdii bhcc bhir bhoi bhor bibb bibi bibo bicc bich bici bico bidi bido bidr bihi bio- bioc bioi birb bird biri biro birr bobb bobi bobo boch boco bodb bodh bodi bodo bohd boho bohr boi- boid boii boob booc bood booh boor bor- bord borh bori boro borr brcb brdo bric brid brih brio brob broc brod broh broo bror brrr c-bo c-cd cbbc cbcc cbcr cbdb cbdc cbdi cbdo cbid cbir cbrd cbrh ccbc cccb cccc ccci ccdc ccdh ccdi ccdr cchr ccic ccid ccii ccir ccob ccoc ccod ccrc ccri cd-r cddb cddr cdic cdii cdio chch chci chdi chib chic chid chih chir choc chod choh choi choo chor chrb chrc chrd chro chrr cibc cibi cibo cicc cich cici cico cicr cidc cidi cidr cihr ciid ciii ciob cior cirb circ cirh ciri ciro cirr cobb cobh cobi cobo coch coco codd codi coho coir coob cood cooh cor- corb corc cord cori coro corr crbc crcc crcr crdc crib cric crob croc crod croh croo cror d-bo dbcc dcbc dccb dccc dcci dcdb dcii dcio dddd ddoc ddrc dhod dhor dibb dibo dich dici dico didi dido diii dioc dior dird dirr dobb dobi doch doci doco dod- dodd dodi dodo dohc dohr doid doob dood door dorc dord dori doro dorr drbc drib dric drih drob drod droh h-ii hbcd hbic hbio hboc hcbc hccb hccc hcch hcdr hchi hcrd hdci hdoc hdod hdri hhhh hi-c hibi hicc hich hico hidi hihc hihi hiho hiob hioc hird hiri hiro hobo hoch hocr hodh hodi hodr hoho hoid hoir hood hoor horc hord hori horo horr hrdc hrib hrid hrob hrod hrrc ibdo ibid ibrc ibrd ibri ibro icbc icbd iccb iccc icci icco iccr icdc icdd ichc ichd ichi icho ichr icoc icod icor icrc icrr idcr iddo idic idid idio idir idoc idrc idro ihcc ihdr ihob ihrc ihrd iicd iiii iiio iioi iioo iirc iobi ioci iod- iodd iodo ioii ioio iooi iooo iori ircc ircd irdc irdo iri- iric irid 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 ohcc ohhi ohho ohid ohio ohob ohoh oici oido oiii oobi oocr oodi ooho ooid oooh oooo oord orbb orbi orbo orch orci orco ordo ori- oric orid orio oro- oror orri orro rbbb rbbr rboh rcbc rcbo rccb rccc rcdc rchb rcic rcid rcrd rdio rdoc rhib rhio rhob rhoc rhod rhoh rib- ribo ricc rich rico ridc ridd ridi rido riho riri rob- robb robi robo rocc roch roco rodd rodi rodo rohr roid roio roir roob rood rooi roor rorc rori roro rrrr