bbbb bbch bbci bbrc bcbc bccc bcci bcor bhcc bhir bhoi bhor bibb bibi bibo bicc bich bici bick bico bihi bikh biko bio- bioc bioi birb biri birk biro birr bobb bobi bobo boch bock boco boho bohr boi- boii boki boko boob booc booh book boor bor- borh bori bork boro borr brcb bric brih brik brio brkb brob broc broh brok broo bror brrr c-bo cbbc cbcc cbcr cbir cbko cbkr cbrh ccbc cccb cccc ccci cchr ccic ccii ccir ccob ccoc ccrc ccri chch chci chib chic chih chik chir chkb choc choh choi chok choo chor chrb chrc chro chrr cibc cibi cibo cicc cich cici cico cicr cihr ciii ciko cikr ciob cior cirb circ cirh ciri cirk ciro cirr ckbc ckbi ckch ckck ckco ckob ckoc ckoi ckoo ckor ckrc cobb cobh cobi cobo coch cock coco coho coir cok- coko coob cooh cook cor- corb corc cori cork coro corr crbc crcc crcr crib cric crik crkc crob croc croh crok croo cror h-ii hbic hbio hboc hcbc hccb hccc hcch hchi hhhh hi-c hibi hicc hich hick hico hihc hihi hiho hiki hiob hioc hiri hirk hiro hkcc hkir hobo hoch hock hocr hoho hoik hoir hoki hoko hook hoor horc hori hork horo horr hrib hrob hrrc ibrc ibri ibro icbc iccb iccc icci icco iccr ichc ichi icho ichr icoc icor icrc icrr ihcc ihob ihrc iiii iiio iioi iioo iirc ikki ikko ikoo ikri iobi ioci ioii ioio ioko iooi iooo iori ircc iri- iric irio irki irob iroc iroh irrc irri k-ci kbbb kbbc kbbi kbbk kbbo kbbr kbcb kbch kbci kbck kbco kbcr kbhb kbhc kbhh kbhi kbhr kbib kbic kbik kbio kbkb kbkk kbko kbkr kbob kboc kboi kbok kboo kbrb kbrc kbrh kbri kbrk kbro kcbc kcbi kcbk kcbr kccb kccc kcci kcck kccr kchh kchi kchk kcho kchr kcic kcii kcir kckc kckk kcko kckr kcob kcoh kcor kcrc kcrh kcri kcro kcrr khbc khbr khcb khcc khch khck khhk khho khic khii khio khki khkk khkr khob khoc khoi khok khor khri khrk khro khrr kibb kibc kibi kibo kibr kicb kicc kick kicr kihc kihh kihi kihk kiho kihr kiic kiii kiik kikc kiki kikk kiko kikr kioc kioh kioi kiok kioo kirb kirc kiri kirk kiro kirr kkbb kkbi kkbo kkbr kkcb kkch kkci kkck kkco kkcr kkhb kkhh kkhi kkhk kkhr kkic kkik kkkk kkob kkoh kkoo kkor kkrb kkrc kkrh kkrk kkro kkrr kobb kobc kobi kobk kobo kobr kocb koch koci kock kohh kohi koho kohr koii koir kokb kokc kokh koki kokk koko kokr koob kooc kooi kook kooo koor korb korc kori kork koro korr krbb krbi krbk krbr krcb krcc krch krci krco krhc krib krik krio krkc krkh krki krkk krko krkr krob kroc kroh kroi krok kroo kror krrb krrc krri krrk krro krrr obbo obkb oboi obok obor obrh obri obro ocbc occc occi ochi ocro ocrr ohcc ohhi ohho ohio ohob ohoh ohok oici oick oiii oiko okic okir okko okok okor okro oobi oocr ooho oooh oooo orbb orbi orbo orch orci orco ori- oric orio orko oro- orok oror orri orro rbbb rbbr rboh rcbc rcbo rccb rccc rchb rcic rhib rhio rhob rhoc rhoh rib- ribo ricc rich rick rico riho riki rikk riri rob- robb robi robo rocc roch rock roco rohr roik roio roir rokh roki rokk roko rokr roob rooi rook roor rorc rori rork roro rrrr