bbbb bbci bboy bbyo bcbc bccc bcci bcuc bibb bibi bibo bicc bici bico bio- bioc bioi biou bobb bobi bobo bobu boby boco bocu boi- boii boiu boob booc bouy boyi boyo bubb bubi bubo bubu bucc buci buco bucu buic buiu buoy buyi buyo buyu byob byoc byoi c-bo cbbc cbcc cbcu ccbc cccb cccc ccci cccu ccic ccii ccob ccoc ccuc cibc cibi cibo cicc cici cico cicu ciii ciob ciuc ciyu cobb cobi cobo cobu coby coco cocu coob coub couy coyo cub- cubb cubi cuby cucc cuci cui- cuy- cuyo cybb cybc cybi cybo cyc- cycb cycc cyy- cyyc i-by ibuy ibyi icbc iccb iccc icci icco iccu icoc icub iiii iiio iioi iioo iiuc iobi ioby ioci ioii ioio iooi iooo iucc iuiu obbo obby oboi oboy ocbc occc occi oici oiii oobi ooby oooo oucc ouii ouu- oyou ubbi ubbo ubic ubii uboc ucbc ucci ucio uocc uuoc uuuu yccc yobi yobo youb youi yoyo yubu yuyu yyyy