bbbb bbci bblb bbrc bcbc bccc bcci bccl bcor bibb bibi bibl bibo bicc bici bick bico biko bili bilk bill bilo bio- bioc bioi biol birb biri birk birl biro birr blic blik blio blir blkb blob bloc blok bloo blrc bobb bobi bobo bock boco boi- boii boil boki boko boli bolk boll bolo boob booc book bool boor bor- bori bork boro borr brcb bric brik bril brio brkb brob broc brok brol broo bror brrr c-bo cbbc cbcc cbcl cbcr cbir cbkl cbko cbkr cblb cblc cbol cbrl ccbc cccb cccc ccci cccl ccic ccii ccil ccir cclc ccli ccob ccoc ccrc ccri ccrl cibc cibi cibo cicc cici cico cicr ciii ciko cikr cili cilk cill cilo ciob cior cirb circ ciri cirk cirl ciro cirr ckbc ckbi ckck ckcl ckco ckob ckoc ckoi ckoo ckor ckrc clib clic clii clik clio clir clob clok cloo clor clri clro cobb cobi cobo cock coco coil coir cok- coko col- colb coli colk coll colo coob cook cool cor- corb corc cori cork corl coro corr crbc crcc crcr crib cric crik crkc crkl crob croc crok crol croo cror ibrc ibri ibro icbc iccb iccc icci iccl icco iccr icll iclr icoc icor icrc icrr iiii iiio iioi iioo iirc ikki ikko ikoo ikri ilbc ilic ilio ilir ilki ill- illi illo iloc ilok iloo iobi ioci ioii ioio ioko iolo iooi iooo iori ircc iri- iric iril irio irki irlb irob iroc irrc irri k-ci k-lo kbbb kbbc kbbi kbbk kbbl kbbo kbbr kbcb kbci kbck kbcl kbco kbcr kbib kbic kbik kbil kbio kbkb kbkk kbkl kbko kbkr kblb kbll kblo kblr kbob kboc kboi kbok kboo kbrb kbrc kbri kbrk kbrl kbro kcbc kcbi kcbk kcbl kcbr kccb kccc kcci kcck kccl kccr kcic kcii kcil kcir kckc kckk kckl kcko kckr kclc kcli kclk kcll kclr kcob kcol kcor kcrc kcri kcro kcrr kibb kibc kibi kibl kibo kibr kicb kicc kick kicl kicr kiic kiii kiik kikc kiki kikk kiko kikr kilb kili kilk kill kilo kilr kioc kioi kiok kiol kioo kirb kirc kiri kirk kiro kirr kkbb kkbi kkbl kkbo kkbr kkcb kkci kkck kkcl kkco kkcr kkic kkik kkkk kklb kklc kkli kkll kklo kkob kkol kkoo kkor kkrb kkrc kkrk kkrl kkro kkrr klbb klbc klbl klcb klcc klci klck klcl klcr klib klic klik klil klio klir klkc klkk klkl klko klkr kllb kllc kllk klob kloc klok klol kloo klor klrc klrk klrr kobb kobc kobi kobk kobo kobr kocb koci kock koii koil koir kokb kokc koki kokk koko kokr kolb kolc koli kolk koll kolo kolr koob kooc kooi kook kool kooo koor korb korc kori kork korl koro korr krbb krbi krbk krbl krbr krcb krcc krci krcl krco krib krik kril krio krkc krki krkk krko krkr krlc krob kroc kroi krok krol kroo kror krrb krrc krri krrk krrl krro krrr lbcc lblr lcbc lccc lcor lcrl libc libo libr lick lico licr liii liir liko lilb lili lill lilo lio- lior lirc liri lirk lirl liro lirr llcc lllc llll lloc lloo lob- lobb lobi lobo locc loci lock loco loic loik loir loki lokk loko loli loll lolo loob looc look lool loor lori lork loro lric lroc lroi lrrc lrrr obbo obkb oboi obok obol obor obri obro ocbc occc occi oclc ocrl ocro ocrr oici oick oiii oiko okic okir okko oklo okok okol okor okro olbo olcc olib olic olio olki olli ollo olor oobi oocr oolo oooo orbb orbi orbo orci orco ori- oric oril orio orko orlo oro- orok oror orri orro rbbb rbbr rbcl rcbc rcbo rccb rccc rcic rib- ribo ricc rick rico riki rikk rill rilo riol riri rob- robb robi robo rocc rock roco roik roil roio roir roki rokk roko rokr rolk roll rolo roob rooi rook rool roor rorc rori rork roro rrrr