bbbb bboy bbyo bcbc bccc bcnu bcuc bnoc bobb bobo bobu boby boco bocu bonc bonn bono bonu bony boob booc boon boun bouy boyn boyo bubb bubo bubu bucc buco bucu bunb bunn buno bunu buon buoy buyo buyu bync byno byob byoc byon byun c-bo cbbc cbcc cbcn cbcu ccbc ccbn cccb cccc cccu ccnb ccnc ccnu ccny ccob ccoc ccuc cnbc cnco cobb cobo cobu coby coco cocu con- conc conn cono cony coob coon coub coun couy coyn coyo cub- cubb cuby cucc cucn cuno cuny cuon cuy- cuyo cybb cybc cybo cyc- cycb cycc cyn- cyno cyon cyun cyy- cyyc cyyn nbbc nbbo nbcc nbco nboy ncbc nccc nccn nccu ncnc ncoc nnnn nobc nobo nobu noco non- nonn nono nonu noo- noob noon nooo noun noyo nubc nuby nucu nunc nunn nuno nuny nuoc nuon nycc nyco nycy nyny nyon obbo obby obon oboy ocbc occc occn ocon onby onc- onco onno onon onoy ooby oooo oucc oun- ouu- oyon oyou oyun ubbo uboc ubon ucbc ucon uncc unco unno unon uocc uuno uuoc uuuu uuyn yccc ynon ynou yobo yono yoon youb yoyn yoyo yubu yuny yuon yuyu yyyy