bbbb bbci bbfc bblb bbrc bcbc bccc bcci bccl bcfc bcof bcor bffl bibb bibi bibl bibo bicc bici bico biff bifi bili bill bilo bio- bioc bioi biol birb biri birl biro birr blfc blic blio blir blob bloc bloo blrc bobb bobi bobo boco boff boi- boii boil boli boll bolo boob booc boof bool boor bor- borf bori boro borr brcb brfc bric bril brio brob broc brol broo bror brrr c-bo cbbc cbcc cbcl cbcr cbfb cbfc cbir cblb cblc cbol cbrl ccbc cccb cccc cccf ccci cccl ccfc ccff ccfi ccfl ccic ccii ccil ccir cclc ccli ccob ccoc ccrc ccrf ccri ccrl cfbc cfbr cfcb cfcf cfcl cfco cffb cffr cfor cfrb cibc cibi cibo cicc cici cico cicr ciff cifl ciii cili cill cilo ciob cior cirb circ ciri cirl ciro cirr clib clic clif clii clio clir clob clof cloo clor clri clro cobb cobi cobo coco cofc coff cofi coif coil coir col- colb coli coll colo coob coof cool cor- corb corc corf cori corl coro corr crbc crcc crcr crfc crfl crib cric crif crlf crob croc crol croo cror fccf fcic fcii ffcc ffff ffii ffrr ficc fico fifc fiff fifi fifo fiii fiil fili fill filo fior flcl flic flii flob floc floo flor foci foco fofo foil folc foli foll folo folr foof fool for- forb fori forl foro forr frbc frcc frfc frib fric fril frio frob frol ibfi ibrc ibri ibro icbc iccb iccc iccf icci iccl icco iccr icfb icll iclr icoc icor icrc icrf icrr ifbb ifco ific ifil ifor ifrb ifrf ifri iiii iiio iioi iioo iirc ilbc ilic ilio ilir ill- illi illo iloc iloo iobi ioci iofc ioii ioio iolo ioof iooi iooo iori ircc iri- iric iril irio irlb irob iroc irrc irri lbcc lblr lcbc lccc lcfc lcfr lcor lcrl lfcc libc libo libr lico licr liff lifl lifo liii liir lilb lili lill lilo lio- lior lirc liri lirl liro lirr llcc lllc llll lloc lloo lob- lobb lobi lobo locc loci loco loff lofi loic loif loir loli loll lolo loob looc loof lool loor lori loro lrfc lric lrif lroc lroi lrrc lrrr obbo oboi obol obor obri obro ocbc occc occi oclc ocrl ocro ocrr ofcl ofcr off- offc offo offr ofor oici oiii olbo olcc olib olic olio olli ollo olof olor oobi oocr ooff oolo oooo orbb orbi orbo orci orco orff orfi ori- oric orif oril orio orlo oro- orof oror orri orro rbbb rbbr rbcl rcbc rcbo rccb rccc rcfc rcic rffc rffl rfic rib- ribo ricc rico riff riif rill rilo riol riri rlif rob- robb robi robo rocc roco rofc roff rofl rofo roif roil roio roir rolf roll rolo roob roof rooi rool roor rorc rori roro rrfc rrif rrrr