bbbb bboy bbrc bbyo bcbc bccc bcor bcoz bobb bobo boby boco boob booc boor booz bor- boro borr bory borz boyo boyz bozo brcb brob broc broo bror broz brrr bry- bryo byob byoc bzyb bzzz c-bo cbbc cbcc cbcr cbry ccbc cccb cccc ccob ccoc ccrc cobb cobo coby coco coob cor- corb corc coro corr cory coyo coyr cozy cozz crbc crcc crcr crcz crob croc croo cror croy croz cry- cryb cryo cryz cybb cybc cybo cyc- cycb cycc cyy- cyyc czyz obbo obby obor oboy obro ocbc occc ocro ocrr ooby oocr oooo oory oozy orbb orbo orby orco oro- oror oroy oroz orro orry orzo ozzy rbbb rbbr rcbc rcbo rccb rccc rcyc rob- robb robo roby rocc roco roob roor rooz rorc roro rory rozz rrrr ryob ybor ybry yccc yobo yooz yoro yory yoyo yozo yyyy z-ro zobo zoco zoo- zorb zorc zoro zory zozo zzzz