bbbb bbci bbin bbrc bcbc bccc bcci bcor bcvo bibb bibi bibo bicc bici bico biin bin- binc bini binn bino bio- bioc bioi bion birb biri birn biro birr bivi bnib bnin bnoc bnor bnrr bobb bobi bobo boco boi- boii boin bonc boni bonn bono boob booc boon boor bor- bori born boro borr bovi bovo brcb bric brin brio brno brob broc bron broo bror brrr brvi c-bo cbbc cbcc cbcn cbcr cbir cbrn cbvb cbvn cbvr ccbc ccbn cccb cccc ccci cccv ccic ccii ccir cciv ccnb ccnc ccni ccnr ccob ccoc ccrc ccri ccvi ccvo cibc cibi cibo cicc cici cico cicr ciii cin- cinc cini cino cinv ciob cion cior cirb circ ciri ciro cirr civc civo cnbc cnci cnco cnib cnic cnrc cnrr cobb cobi cobo coco coin coir con- conc coni conn cono conv coob coon cor- corb corc cori corn coro corr covo crbc crcc crcr crib cric crin crob croc cron croo cror cvcc cvii cvrr i-no ibon ibrc ibri ibro icbc iccb iccc icci iccn icco iccr icnb icnc icoc icon icor icrc icrr iiii iiio iino iioi iioo iirc inbo incb inci inco incr inni inno innr ino- inoi inon inor inri inro iobi ioci ioii ioio ioni ionn iono iooi iooo iori ircc iri- iric irin irio irob iroc iron irov irrc irri ivbv ivic ivin ivon ivor n-ii nbbc nbbo nbcc nbci nbco nbic ncbc ncbi nccc ncci nccn nccr ncnc ncoc ncor ncrc ncri nibi nibo nicc nici nico niir nini nino nion nioo niro nirv nivo nivr nnnn nobc nobi nobo noci noco noib noin noio noir non- noni nonn nono noo- noob noon nooo noor noov nor- norb norc nori norn noro norr norv nov- novi novo nric nroc nron nrrc nvcc nvir obbo obin oboi obon obor obri obro obvi ocbc occc occi occn ocin ocon ocro ocrr oici oiii oion onc- onco onic onir onni onno onon onor oobi oocr oooo orbb orbi orbo orci orco ori- oric orin orio ornc orni orno oro- oron oror orri orro orvr ovi- ovni ovo- ovon ovoo rbbb rbbr rcbc rcbo rccb rccc rcic rcnr rcon rcvr rib- ribo ricc rico riin rinn rino rion riri rivo rnbr rnco rnin rob- robb robi robo rocc roco roin roio roir ronc roni rono roob rooi roon roor rorc rori roro rovi rovo rrrr rv-c vbcc vcbi vcci vcon vic- vici vico viii vinc vini vino vion virb virc viri viro virr vivi vivo vnir voic voin voio voir voni vonn vooc voor vor- vori voro vrci vrin vrio vrnn vroc vron vvob vvvv