shsc shts shub shun shur shus shut shuu sncc snco snhs snns snob snoc snoo snor snos snot snrs sntr snub snur snus sobo sobr sobs sobt sobu soch soco socr socs sohh sohn soho sohs sohu son- sono sons sont sonu soon soor soos soot sorb sorh sorn soro sorr sors sort soru sosh soso soss sost sotc soth sotn soto sots sotu soun sour sous sout srbc srcc srch srct srhs srnn srno sros srtr srub ssbn ssbr sscc sscs sshs ssns ssoc ssot ssrc ssrs sssb sssc sssh ssss sstb sstc ssth ssts stbc stbs stcc stch stcs stcu sthn sths stnn stnr stns stob ston stoo stor stos stot stou strc strn stro strs stru stss sttc sttr stub stuc stun stur stus stut sub- subb subh subo subs suc- succ such sucr sucs suhb suho suhr sun- sunb sunn suno suns sunt sunu suoh suor suos sur- surc surn suro surr surs surt suru sus- suso suss sust susu suto sutu suus tbbs tbcb tbcc tbhs tbrb tbst tcbs tccc tccu tch- tchh tcho tchr tchs tchu tcnn tcon tcos tcsh tctc tcts thbs thch thnt thon thoo thor thos thot thou thro thru thsr thss thtb thtr thts thun thur thus tnbc tncc tnsh tnts tnut tobo tobs tobt tobu toch toco toho tohu tonb tonh tonn tono tons tonu tooh toon toor toos toot torc torn toro torr tors tort toru tosb tosc tosh toso toss tost tosu totc toth toto totr tots tott touh toun tour tous tout trcc trhs trno troc tron troo tros trot trou trst trtc trtr trub truc trun trus trut truu tsbc tscc tshb tshs tsob tsos tsou tssr tsst tstc tsts tsun ttbb ttcn tton ttss tttt tubb tubo tubr tubs tubu tucc tuch tuco tuhs tuht tuhu tunb tunc tunn tuno tuns tunu tuor tuos turb turc turn turo turr turs turt turu tusc tush tuss tust tuto tuts tutt tutu tuuo ubbo uboc ubon ubos ucbc ucho uchs ucon ucos ucrc ucsb ucsc ucst ucsu ucut uhno uhoh uhrs uhss uhuh uncc unch unco uncs unct unno unns unon unos unro unrs uns- unsc unso unst untb unth unto unts unus unut uocc uor- urbs urch urho urns uro- uroo urrh urso urss ursu urth urts urun urur urus urut usbc usbr usbs uscc usch usco uscs usho ushr ushs ushu usnc usno usnr usnu usoc usos ussb ussc ussr usss usst ussu ustb ustc usto usts usun usus utor utsc utto uttu uuno uuoc uuuu