shur shus shut shuu srbc srcc srch srct sreb srec sres srgb srhs srtr srub ssbr sscc ssce sscs ssec ssee sses sset ssgs ssgt sshs ssrc ssrg ssrs sssb sssc sssh ssss sstb sstc ssth ssts stbc stbs stcc stch stcs stcu stec stee steg ster stes stet stge stgr sthg sths strc stre strs stru stss sttc sttr stub stuc stue stug stur stus stut sub- subb subg subh subs suc- succ such sucr sucs suee suer sues suet sueu sug- suge sugg sugh suhb suhr sur- surc sure surg surr surs surt suru sus- suse suss sust susu sute sutu suus tbbs tbcb tbcc tbce tbgs tbhs tbrb tbst tcbs tccc tccu tch- tche tchh tchr tchs tchu tcsh tctc tcts tebu tech tecr tecs tect teec teer tees teet tegg tegh tegs tegt tegu tehr ter- terc tere terr ters teru tesc tese tesh tess test tete teth tetr tets tett tetu teut tgcc tghs tgtc tgts thbs thch the- theb thec thee ther thes thet theu thre thru thse thsr thss thtb thtr thts thue thug thur thus trcc tre- trec tree treg tres tret treu trge trhs trst trtc trte trtr trub truc true trug trus trut truu tsbc tscc tscg tsec tses tset tsgt tshb tshe tshs tsse tssg tssr tsst tstc tsts ttbb tter ttss tttt tubb tube tubr tubs tubu tucc tuch tuer tues tuet tugg tugh tugs tugu tuhs tuht tuhu turb turc ture turg turr turs turt turu tusc tush tuss tust tute tuts tutt tutu ubbe uber ubet ucbc uces uche uchs ucrc ucsb ucsc ucst ucsu ucut uers uess ugcc ugcg uggs uggt ughe ughs ugur uguu uher uhrs uhss uhuh urbe urbs urch ure- ureh ures uret urge urgh urgu urre urrh urse urss ursu urte urth urts urur urus urut usbc usbe usbr usbs uscc usce uscg usch uscs usee user uses uset ushr ushs ushu ussb ussc usse ussr usss usst ussu ustb ustc uste usts usus utec uter utes uthe utsc uttu utug uuuu