bbbb bcbc bcbp bccc bcoz bcpp bctc bcuc bcup bobb bobo bobu boco bocu boob booc boop boot booz bopp botb boto bott boup bout bozo bpcp bpot btbp btcc btob bttb bubb bubo bubu bucc buco bucu bucz bupc but- buto butt butz buuz buzz bzou bzzt bzzz c-bo cbbc cbcc cbcp cbct cbcu cbot cbpc cbpp cbtc ccbc cccb cccc cccp cccu ccob ccoc ccpp cctb cctc cctt ccuc ccup ccut cobb cobo cobu coco cocp coct cocu coob coop coot copo copp copt cotb cotc coto cott cotu coub coup cout cozz cpbc cpcu cptp ctcp ctot ctpo ctpp cub- cubb cucc cupo cupp cut- cutc cuto cutt cuzo obbo obot ocbc occc occt ocpp oct- octo oooo ootb ootp opo- oppo opto oto- otoo otpp otto ottu oucc out- outb outo ouu- ouzo pbcc pboc pcbc pccc pcpb pcpp pobo poco poop poot pop- popc popo popp popt potc poto pott potu poup pout pozo ppcc pppo pppp pptt ptcc ptop pttc pubu pupu put- puto putt putu putz puuc puzo tbcb tbcc tbtp tccc tccu tcpo tctc tobo tobt tobu toco toot top- topo topp topt topu topz totc toto tott toup tout tozo tpcp tppp tptp tput ttbb ttcp ttop tttt tubb tubo tubu tucc tuco tupo tupu tuto tutt tutu tuuo tuzu tuzz tzut tzzt ubbo uboc ubpc ucbc uccp ucoz ucpb ucut uocc uppc uppp uppu upto upup utto uttu uucp uuoc uuuu zctu zobo zoco zoo- zoop zoot zott zotz zouc zozo zozu ztop zubo zubu zuoz zuzu zzzz