bbbb bbci bblb bbrc bcbc bccc bcci bccl bcor bcvo bibb bibi bibl bibo bicc bici bico bili bill bilo bio- bioc bioi biol birb biri birl biro birr bivi bivl blic blio blir blob bloc bloo blrc bobb bobi bobo boco boi- boii boil boli boll bolo boob booc bool boor bor- bori boro borr bovi bovo brcb bric bril brio brob broc brol broo bror brrr brvi c-bo cbbc cbcc cbcl cbcr cbir cblb cblc cbol cbrl cbvb cbvr ccbc cccb cccc ccci cccl cccv ccic ccii ccil ccir cciv cclc ccli cclv ccob ccoc ccrc ccri ccrl ccvi ccvo cibc cibi cibo cicc cici cico cicr ciii cili cill cilo cilv ciob cior cirb circ ciri cirl ciro cirr civc civo clib clic clii clio clir cliv clob cloo clor clri clro clrv clvi cobb cobi cobo coco coil coir col- colb coli coll colo coob cool cor- corb corc cori corl coro corr covo crbc crcc crcr crib cric crob croc crol croo cror cvcc cvii cvrr ibrc ibri ibro icbc iccb iccc icci iccl icco iccr icll iclr icoc icor icrc icrr iiii iiio iioi iioo iirc ilbc ilic ilio ilir ill- illi illo iloc iloo iobi ioci ioii ioio iolo iooi iooo iori ircc iri- iric iril irio irlb irob iroc irov irrc irri ivbv ivic ivor lbcc lblr lcbc lccc lcor lcrl lcrv libc libo libr lico licr liii liir liiv lilb lili lill lilo lio- lior lirc liri lirl liro lirr livi livo llcc lllc llll lloc lloo lo-v lob- lobb lobi lobo locc loci loco loic loir loli loll lolo loob looc lool loor lori loro lovo lric lroc lroi lrrc lrrr lvcc lvii lviv lvov lvrr obbo oboi obol obor obri obro obvi ocbc occc occi oclc ocrl ocro ocrr oici oiii olbo olcc olib olic olio olli ollo olor olov olvi oobi oocr oolo oooo orbb orbi orbo orci orco ori- oric oril orio orlo oro- oror orri orro orvr ovi- ovil ovo- ovol ovoo rbbb rbbr rbcl rcbc rcbo rccb rccc rcic rcvr rib- ribo ricc rico rill rilo riol riri rivo rob- robb robi robo rocc roco roil roio roir roll rolo roob rooi rool roor rorc rori roro rovi rovo rrrr rv-c vbcc vcbi vcci vic- vici vico viii vili vill viol virb virc viri virl viro virr vivi vivo vlcc vlci vlli vloc voic voil voio voir volc voli voll volo vooc vool voor vor- vori voro vrbl vrci vril vrio vroc vvob vvvv