bbbb bbbq bblb bcbc bccc bccl bcuc blcu blob bloc bloo blou blub bobb bobo bobu boco bocq bocu boll bolo bolu boob booc bool boul bubb bubo bubq bubu bucc buco bucu bulb bull bulu buol c-bo cbbc cbcc cbcl cbcu cblb cblc cbol cboq ccbc cccb cccc cccl cccu cclc ccob ccoc ccuc clob cloo clou club cobb cobo cobu coco cocu col- colb coll colo colq colu coob cool coub coul cub- cubb cucc cucq culb culc cull culo lbcc lcbc lccc llcc lllc llll lloc lloo lob- lobb lobo locc loco locu loll lolo loob looc lool loul louu lull lulu luuq obbo oblu obol oboq ocbc occc oclc ocul olbo olcc ollo oolo oooo oucc oulu ouu- qlol qloo qobu qoob qool qqqq qubo qucu quob quoc quu- ubbo ublo uboc ucbc ulbc ulcc ulco ullo ulo- uloc ulul uocc uolc uqcc uulu uuoc uuuu