bbbb bbbs bbch bbhs bcbc bcbs bccc bccs bchs bcsc bcss bctc bcts bcuc bhcc bhhs bhut bhuu bscs bshs bssc bsts btcc btcs bths btss bttb btus bubb bubs bubu bucc buch bucs bucu buhs busc bush buss bust busu but- buts butt buus cbbc cbbs cbcc cbcs cbct cbcu cbhs cbsc cbtc cbus ccbc cccb cccc cccs cccu cchs ccss ccst cctb cctc cctt ccuc ccus ccut chch chcs chhs chsc chsh chst chtt chub chus chut cscb cscc csch cscs cshs cstc csts csus ctbs cths ctsc ctss ctsu ctts cub- cubb cubs cucc cusb cush cuss cust cusu cut- cutc cuth cuts cutt hbbs hbhs hbss hbtu hcbc hcbs hccb hccc hcch hccs hchs hcsc hcss hcst hhhh hhhs hhus hsbc hscc hsct hshs hsts htcc hths htsc hubb hubs huch hucs hucu huhs huhu hush huss hust huth huts hutt hutu huub huus sbbs sbcc sbcs sbct sbhc sbhs sbst sbtc sbus sccc sccs scct sch- schh schs scsc scsh scst scsu sctc scts scub scut shbs shbt shcc shhh shhs shsc shts shub shus shut shuu sscc sscs sshs sssb sssc sssh ssss sstb sstc ssth ssts stbc stbs stcc stch stcs stcu sths stss sttc stub stuc stus stut sub- subb subh subs suc- succ such sucs suhb sus- suss sust susu sutu suus tbbs tbcb tbcc tbhs tbst tcbs tccc tccu tch- tchh tchs tchu tcsh tctc tcts thbs thch thss thtb thts thus tsbc tscc tshb tshs tsst tstc tsts ttbb ttss tttt tubb tubs tubu tucc tuch tuhs tuht tuhu tusc tush tuss tust tuts tutt tutu ucbc uchs ucsb ucsc ucst ucsu ucut uhss uhuh usbc usbs uscc usch uscs ushs ushu ussb ussc usss usst ussu ustb ustc usts usus utsc uttu uuuu