bbbb bbbs bbch bbhs bbrc bcbc bcbs bccc bccs bchs bcrs bcru bcsc bcss bctc bcts bcuc bhcc bhhs bhrt bhur bhut bhuu brcb brhs brrr brrs brsb brsr brst brtc bruc bruh brus brut bscs bshs bssc bsts btcc btcs bths btrc btrt btss bttb btus bubb bubs bubu bucc buch bucs bucu buhr buhs bur- burb burh burr burs burt buru busc bush buss bust busu but- buts butt buus cbbc cbbs cbcc cbcr cbcs cbct cbcu cbhs cbrh cbrt cbsc cbtc cbus ccbc cccb cccc cccs cccu cchr cchs ccrc ccrs ccrt ccss ccst cctb cctc cctt ccuc ccus ccut chch chcs chhs chrb chrc chrr chrs chrt chsc chsh chsr chst chtr chtt chub chur chus chut crbc crbu crcc crcr crhs crrt crss crst crtc crts crub crus crut cscb cscc csch cscr cscs cshs csrc csrs cssr cstc cstr csts csur csus ctbs cths ctrc ctrs ctsc ctss ctsu ctts cub- cubb cubs cucc curb curr curs curt cusb cush cuss cust cusu cut- cutc cuth cuts cutt hbbs hbhs hbrs hbss hbtu hcbc hcbs hccb hccc hcch hccs hchs hcsc hcss hcst hhhh hhhs hhus hrhs hrrc hrtb hsbc hscc hsct hshs hsts hsur htcc hths htsc httr hubb hubs huch hucs hucu huhs huhu hurr hurs hurt huru hush huss hust huth huts hutt hutu huub huus rbbb rbbr rbbs rbhs rbss rbst rcbc rccb rccc rccs rchb rchs rcsc rcss rctc rcts rhhs rhus rrhs rrrr rscc rsch rscs rshs rsts rstu rtcc rths rtss rtts rubb rubs rubu ruch ruct ruhh ruhr ruhs rurc rurs ruru rush russ rust rusu ruth ruts rutt rutu sbbs sbcc sbcs sbct sbhc sbhs sbst sbtc sbus sccc sccs scct sch- schh schr schs scr- scrc scrs scsc scsh scsr scst scsu sctc sctr scts scub scur scut shbs shbt shcc shhh shhs shrs shsc shts shub shur shus shut shuu srbc srcc srch srct srhs srtr srub ssbr sscc sscs sshs ssrc ssrs sssb sssc sssh ssss sstb sstc ssth ssts stbc stbs stcc stch stcs stcu sths strc strs stru stss sttc sttr stub stuc stur stus stut sub- subb subh subs suc- succ such sucr sucs suhb suhr sur- surc surr surs surt suru sus- suss sust susu sutu suus tbbs tbcb tbcc tbhs tbrb tbst tcbs tccc tccu tch- tchh tchr tchs tchu tcsh tctc tcts thbs thch thru thsr thss thtb thtr thts thur thus trcc trhs trst trtc trtr trub truc trus trut truu tsbc tscc tshb tshs tssr tsst tstc tsts ttbb ttss tttt tubb tubr tubs tubu tucc tuch tuhs tuht tuhu turb turc turr turs turt turu tusc tush tuss tust tuts tutt tutu ucbc uchs ucrc ucsb ucsc ucst ucsu ucut uhrs uhss uhuh urbs urch urrh urss ursu urth urts urur urus urut usbc usbr usbs uscc usch uscs ushr ushs ushu ussb ussc ussr usss usst ussu ustb ustc usts usus utsc uttu uuuu