itbs itcs itec iter ites itet itic itie itis itri itrs itse itsi itsu itur iucc iuce iuds iuiu iusd iuse iuss iust rbbb rbbr rbbs rbds rbis rbsd rbss rbst rcbc rccb rccc rccs rcdc rcde rcds rcet rcic rcid rcis rcrd rcsc rcsd rcsi rcss rctc rcti rcts rder rebb rebe rebs rebu recc recd rece reci recr recs rect recu redc redd rede redi redr reds redu reeb reed rees reet reid reii reir reis reit reiu rerd rere reri rers rert reru rese resi ress rest retd rete reti retr rets rett reue reus reut reuu rib- ribe ribs ribu ricc rice rics rict ridc ridd ride ridi rids ried rier ries riet rieu riis rire riri rirs risc risd rise risi riss rist risu rite riti rits ritt ritu riue rius rred rrrr rsbi rscc rscs rsdd rsds rsee rsid rsis rsre rsts rstu rtcc rtce rtdt rtee rtei rtes rtss rtts rubb rube rubi rubs rubu ruce ruci ruct rudd rude rudi ruds rued ruer rues ruet ruid ruis ruit rurc rurd rure ruri rurs ruru ruse rusi russ rust rusu rute ruti ruts rutt rutu ruud s-ib s-ic s-ii sbbs sbcc sbcs sbct sbds sber sbic sbsd sbse sbsi sbst sbtc sbus scbi sccc scce sccs scct scdc scds scec scee scer scet sci- scic scid scie scir scis scit scr- scrc scre scri scrs scsc scsd scsi scsr scst scsu sctc sctd sctr scts scub scud scur scut sdcc sddc sdds sder sdes sdet sdib sdic sdrc sdrs sdsc sdss sdsu se-c se-d se-e se-i se-s se-t se-u sebe sebi sebs sebt sec- secc secd sece secr secs sect secu sede seds seeb seec seed seer sees seet seeu seid seie seii seir seis seit seiu serb serc serd sere seri serr sers sert seru sesc sese sesi sess sest set- setc sete seti sets sett seui seur sibc sibe sibi sibs sibu sicc sice sici sics sicu sidd side sidi sidr sids siec sied sier sies siit sirc sire siri sirr sirs sirt siru sisc sisd sise sisi siss sist sisu sit- sitc sitd site siti sits sitt situ siue siui sius siut srbc srcc srct srde sreb srec sres srib sris srsd srtr srub ssbr sscc ssce ssci sscs ssdc ssdd ssec ssee sses sset ssid ssis ssit ssrc ssri ssrs sssb sssc sssi ssss sstb sstc sstd ssts stbc stbd stbs stcc stcs stcu stds stec sted stee ster stes stet stib stic stid stie stir stis stit strc strd stre stri strs stru stsi stss sttc sttd sttr stub stuc stud stue stur stus stut sub- subb subd subi subs suc- succ suci sucr sucs sudd sude sudi suds sued suee suer sues suet sueu suid suie suir suis suit sur- surc surd sure suri surr surs surt suru sus- susd suse susi suss sust susu sute suti sutu suus tbbs tbcb tbcc tbcd tbce tbit tbrb tbst tcbs tccc tccu tcdd tctc tcts tddb tdes tdis tdri tdse tdss tebu tecr tecs tect tedd tede tedi teds teec teed teer tees teet teic teie teir teis teiu ter- terc tere teri terr ters teru tesc tesd tese tess test tete teti tetr tets tett tetu teut tibi tibs tibu ticc tice tics tidc tidd tide tids tie- tied tiee tiei tier ties tiet tiit tiiu tirb tird tire tiri tirr tirs tiru tisb tise tisi tiss tist titc tite titi tits titt titu trcc tre- trec tred tree trei tres tret treu tri- trib tric trie tris trit trsd trsi trst trtc trte trtr trub truc trud true trus trut truu tsbc tsbd tscc tsdb tsec tses tset tsid tsis tsse tssi tssr tsst tstc tsts tsui ttbb tter ttss tttt tubb tube tubr tubs tubu tucc tude tudi tudu tuei tuer tues tuet tuis tuit tuiu turb turc turd ture turi turr turs turt turu tusc tusd tusi tuss tust tute tuti tuts tutt tutu u-ie ubbe ubbi uber ubet ubic ubid ubii ubir ubis ubit ubud ucbc ucci ucdc ucdd uces ucrc ucsb ucsc ucsd ucst ucsu ucut udbc uddi udds uder udet udic udid udir udsd udts ueir uers uess uies uirr uisd uise uist uits urbe urbi urbs urci urde urds urdu ure- ured ures uret urib uric urie uris uriu urre urri urse ursi urss ursu urte urts urur urus urut usbc usbe usbr usbs uscc usce uscs usdc usde usds usdt used usee user uses uset usie usis ussb ussc usse ussr usss usst ussu ustb ustc uste usti usts usui usus utec uter utes utid utis utri utsc utti uttu uuri uusi uuuu