bbbb bbbs bbci bbdd bbrc bcbc bcbs bccc bcci bccs bcds bcis bcit bcrs bcru bcsc bcss bctc bcts bcuc bd-r bdbc bddc bdii bdsd bibb bibi bibs bicc bici bics bidi bidr bids bidu biis birb bird biri birr birs birt biru bis- bisc bisd biss bist bisu bitc bitd bits bitt bitu brcb brds brdt bric brid bris brit brrr brrs brsb brsr brst brtc bruc brud brus brut bsbd bsci bscs bsic bsrd bssc bssd bsts btcc btcs btdt btrc btrt btss bttb btus bubb bubi bubs bubu bucc buci bucs bucu budb budd budi buds budu buic buid buir buis buit buiu bur- burb burd buri burr burs burt buru busc busi buss bust busu but- buti buts butt buus c-cd cbbc cbbs cbcc cbcr cbcs cbct cbcu cbdb cbdc cbdi cbds cbid cbir cbit cbrd cbrt cbsc cbsi cbtc cbus ccbc cccb cccc ccci cccs cccu ccdc ccdi ccdr ccds ccic ccid ccii ccir ccis ccrc ccri ccrs ccrt ccsd ccsi ccss ccst cctb cctc cctt ccuc ccus ccut cd-r cdcs cddb cddr cdic cdii cdis cdrs cdss cibc cibi cicc cici cicr cics cict cicu cidc cidi cidr cids cidt ciid ciii ciis ciit cirb circ ciri cirr cirs cirt cis- cisc cisd cisr ciss cist citb citi cits citt citu ciuc cius crbc crbu crcc crcr crdc crib cric cris crit criu crrt crss crst crtc crts crub crud crus crut cscb cscc cscd csci cscr cscs csdb csdr csib csid csir csis csit csrc csrd csrs cssd cssr cstc cstd cstr csts csur csus ctbi ctbs ctic ctrc ctrs ctsc ctss ctsu ctts cub- cubb cubi cubs cucc cuci cudi cuds cui- cuir cuis cuit curb curd curi curr curs curt cusb cusd cuss cust cusu cut- cutc cuts cutt dbcc dbcs dbit dbrs dbss dbtt dbus dcbc dccb dccc dcci dccs dcct dccu dcdb dcds dcii dcis dcsc dcss dctc dcts dddd ddrc ddss ddts ddub dibb dibs dici dict didi dids didu diii diis dird dirr dirs dirt dis- disc disd disi diss dist diti dits ditt dius drbc drib dric drit drrs drub drui drus drut druu dsbc dscc dscr dscs dsdr dsrc dsri dsrr dssc dssi dsst dstc dsts dtcc dtss dub- dubb dubc dubs dubu ducs duct dudd duds dudu duid duir duis duit duri durt duru dusi dust duts duur duut ibcs ibid ibis ibrc ibrd ibri ibss ibtb ibtc ibts ibus icbc icbd icbs iccb iccc icci iccr iccs icct iccu icdc icdd icis icrc icrr icrs icrt icru icsb icsc icsd icsi icsr icss icst icts icub icus idcr idic idid idir idis idrc idsc idss idts idub idus iicd iiii iiis iiit iirc iirs iisc iisd iisi iisr iist iisu iitr iitt iiuc ircc ircd ircs ircu irdc irds iri- iric irid iris irrc irri irrs irti irts irus isbd isbt iscc iscd isci iscr iscs isct iscu isdb isdc isds isic isis isit isri issc issi issr isss issu istc istd isti istr ists isus itbs itcs itic itis itri itrs itsi itsu itur iucc iuds iuiu iusd iuss iust rbbb rbbr rbbs rbds rbis rbsd rbss rbst rcbc rccb rccc rccs rcdc rcds rcic rcid rcis rcrd rcsc rcsd rcsi rcss rctc rcti rcts rib- ribs ribu ricc rics rict ridc ridd ridi rids riis riri rirs risc risd risi riss rist risu riti rits ritt ritu rius rrrr rsbi rscc rscs rsdd rsds rsid rsis rsts rstu rtcc rtdt rtss rtts rubb rubi rubs rubu ruci ruct rudd rudi ruds ruid ruis ruit rurc rurd ruri rurs ruru rusi russ rust rusu ruti ruts rutt rutu ruud s-ib s-ic s-ii sbbs sbcc sbcs sbct sbds sbic sbsd sbsi sbst sbtc sbus scbi sccc sccs scct scdc scds sci- scic scid scir scis scit scr- scrc scri scrs scsc scsd scsi scsr scst scsu sctc sctd sctr scts scub scud scur scut sdcc sddc sdds sdib sdic sdrc sdrs sdsc sdss sdsu sibc sibi sibs sibu sicc sici sics sicu sidd sidi sidr sids siit sirc siri sirr sirs sirt siru sisc sisd sisi siss sist sisu sit- sitc sitd siti sits sitt situ siui sius siut srbc srcc srct srib sris srsd srtr srub ssbr sscc ssci sscs ssdc ssdd ssid ssis ssit ssrc ssri ssrs sssb sssc sssi ssss sstb sstc sstd ssts stbc stbd stbs stcc stcs stcu stds stib stic stid stir stis stit strc strd stri strs stru stsi stss sttc sttd sttr stub stuc stud stur stus stut sub- subb subd subi subs suc- succ suci sucr sucs sudd sudi suds suid suir suis suit sur- surc surd suri surr surs surt suru sus- susd susi suss sust susu suti sutu suus tbbs tbcb tbcc tbcd tbit tbrb tbst tcbs tccc tccu tcdd tctc tcts tddb tdis tdri tdss tibi tibs tibu ticc tics tidc tidd tids tiit tiiu tirb tird tiri tirr tirs tiru tisb tisi tiss tist titc titi tits titt titu trcc tri- trib tric tris trit trsd trsi trst trtc trtr trub truc trud trus trut truu tsbc tsbd tscc tsdb tsid tsis tssi tssr tsst tstc tsts tsui ttbb ttss tttt tubb tubr tubs tubu tucc tudi tudu tuis tuit tuiu turb turc turd turi turr turs turt turu tusc tusd tusi tuss tust tuti tuts tutt tutu ubbi ubic ubid ubii ubir ubis ubit ubud ucbc ucci ucdc ucdd ucrc ucsb ucsc ucsd ucst ucsu ucut udbc uddi udds udic udid udir udsd udts uirr uisd uist uits urbi urbs urci urds urdu urib uric uris uriu urri ursi urss ursu urts urur urus urut usbc usbr usbs uscc uscs usdc usds usdt usis ussb ussc ussr usss usst ussu ustb ustc usti usts usui usus utid utis utri utsc utti uttu uuri uusi uuuu