-th b-u bbb bbc bbh bbr bbs bbt bbu bcb bcc bch bcr bcs bct bcu bhb bhc bhh bhr bhs bht bhu brb brh brr brs brt bru bsb bsc bsh bsr bss bst bsu btb btc bth btr bts btt btu bub buc buh bur bus but buu c-- cbb cbc cbh cbr cbs cbt cbu ccb ccc cch ccr ccs cct ccu ch- chb chc chh chr chs cht chu crb crc crh crr crs crt cru csb csc csh csr css cst csu ctb ctc cth ctr cts ctt ctu cub cuc cuh cur cus cut cuu hbb hbc hbh hbr hbs hbt hbu hcb hcc hch hcr hcs hct hhb hhc hhh hhr hhs hht hhu hr- hrb hrc hrh hrr hrs hrt hru hsb hsc hsh hsr hss hst hsu htb htc hth htr hts htt hub huc huh hur hus hut huu rbb rbc rbh rbr rbs rbt rbu rcb rcc rch rcr rcs rct rcu rh- rhb rhc rhh rhr rhs rht rhu rrb rrc rrh rrr rrs rrt rru rsb rsc rsh rsr rss rst rsu rtb rtc rtr rts rtt rtu rub ruc ruh rur rus rut ruu sbb sbc sbh sbr sbs sbt sbu scb scc sch scr scs sct scu sh- shb shc shh shr shs sht shu sr- srb src srh srr srs srt ss- ssb ssc ssh ssr sss sst ssu stb stc sth str sts stt stu sub suc suh sur sus sut suu tbb tbc tbh tbr tbs tbt tbu tcb tcc tch tcr tcs tct tcu th- thb thc thh thr ths tht thu trb trc trh trr trs trt tru tsb tsc tsh tsr tss tst tsu ttb ttc tth ttr tts ttt ttu tub tuc tuh tur tus tut tuu ubb ubc ubh ubr ubs ubt ubu ucb ucc uch ucr ucs uct ucu uhb uhc uhh uhr uhs uht uhu ur- urb urc urr urs urt uru usb usc ush usr uss ust usu utb utc uth utr uts utt utu uuc uur uus uut uuu

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

bbsrc bbuss bcbst brrrr brths bruch bruhs brush bruss brust btr-t btstu buchs bucht buchu bucsu bucur burbs burch burcu burrs burru burst burts burtt buruc burus burut busch bussu busts busur busut busuu butch butts butut c-bus ccccc chubb chubs chur- churr churs churt churu chuss chust chuts crush crust cruth cruts cstcc cubub curbs curch currs curst curts cutch cutcu cutts hhhhh hthrt hubbs hubur hucch huhuh huhus hurst hurts hurtt hurtu husch husht hutch huttu hutus huuru rsust rubus ruhrs ruhub rusch rushh russh rusts rustu rutch ruths ruthu ruuth ruutu s-bus s-sch sccbc schuh schur schut scrch scrub scrus sctrs scurr scurt scut- scuts scutt shhhh shrub shubb shuch shurt shuru shush shust shuts shutt shutu sssrb ssssh sssss sthrt strrs strub struc strut sttch stubs stuhr sturb sturt stush stuss stuth subbu subss subst sucr- sucst suhur surch surtr suruh surur surus susch susus sutth suttu t-hub tbtbt tbutt tchrs tchuh thrub thrus thsts thubs thurs thurt