shuf shur shus shut shuu sobe sobo sobr sobs sobt sobu soeo soes sofo soft sohh soho sohs sohu soof soor soos soot sorb sore sorh soro sorr sors sort soru sose sosh soso soss sost sote soth soto sots sotu soue souf sour sous sout sreb sreo sres srhs sros srtr srub ssbr ssee sses sset sshs ssot ssrs sssb sssf sssh ssss sstb ssth ssts stbs stee stef steo ster stes stet stfu sths stob stoe stof stoo stor stos stot stou stre stro strs stru stsf stss sttr stub stue stuf stur stus stut sub- subb subh subo subs suee suer sues suet sueu suf- suff sufr sufs sufu suhb suho suhr suoh suor suos sur- sure surf suro surr surs surt suru sus- suse suso suss sust susu sute suto sutu suus tbbs tbhs tbrb tbst tebo tebu teef teer tees teet teff teft teho tehr teoh teor teos ter- tere terf tero terr ters teru tese tesh teso tess test tete teth teto tetr tets tett tetu teut tfeb tfot tfrs tfss thbs the- theb thee thef theo ther thes thet theu thoe thof thoo thor thos thot thou thre thro thru thse thsr thss thtb thtr thts thue thur thus tobe tobo tobs tobt tobu toee toeh toer toes toet toff tofo toft tofu toho tohu toof tooh toor toos toot tore torf toro torr tors tort toru tosb tose tosh toso toss tost tosu tote toth toto totr tots tott touh tour tous tout tre- tree tref treo tres tret treu trfr trhs troe troo tros trot trou trst trte trtr trub true trus trut truu tses tset tshb tshe tshs tsob tsos tsou tsse tssf tssr tsst tsts ttbb tteo tter ttff ttoe ttss tttt tubb tube tubo tubr tubs tubu tuer tues tuet tufe tuff tufo tuft tufu tuhs tuht tuhu tuor tuos turb ture turf turo turr turs turt turu tush tuss tust tute tuto tuts tutt tutu tuuo ubbe ubbo uber ubet ubos ubtf uers uess ufer uffe ufos uher uhoh uhrs uhss uhuh uofo uor- uore urbe urbs ure- ureh ures uret urfe urff urft urho uro- uroo urre urrh urse urso urss ursu urte urth urts urur urus urut usbe usbr usbs usee usef user uses uset usfs usho ushr ushs ushu usoe usos ussb usse ussf ussr usss usst ussu ustb uste usto usts usus uter utes utfo uthe utor utto uttu uutf uuuu