stsi stsm stss sttc sttd sttr stub stuc stud stum stur stus stut sub- subb subd subi subm subo subs suc- succ suci sucr sucs sudd sudi sudo suds suid suio suir suis suit sum- sumd sumi sumo sums sumu suor suos sur- surc surd suri suro surr surs surt suru sus- susd susi suso suss sust susu suti suto sutu suum suus t-mo tbbs tbcb tbcc tbcd tbit tbrb tbst tcbs tccc tccu tcdd tcom tcos tctc tcts tddb tdis tdmi tdor tdri tdss tibi tibs tibu ticc tico tics tidc tidd tids tiit tiiu timi timm timo tims timu tios tiou tirb tird tiri tiro tirr tirs tiru tisb tisi tism tiso tiss tist titc titi tito tits titt titu tium tmbc tmbr tmcc tmcm tmos tmou tmro tmsc tmsi tmtt tobi tobo tobs tobt tobu toci toco todd todi todo tods todt todu toid tois toit tomb tomi tomm tomo toms tomt tood toom toor toos toot torc tord tori torm toro torr tors tort toru tosb tosc tosi toso toss tost tosu totc totd toti totm toto totr tots tott toui toum tour tous tout trcc tri- trib tric trim trio tris trit trmb trmd trmi trms trmu troc trod troi trom troo tros trot trou trsd trsi trst trtc trtr trub truc trud trus trut truu tsbc tsbd tscc tsdb tsid tsis tsmc tsob tsoi tsom tsos tsou tssi tssm tssr tsst tstc tstm tsts tsui tsum ttbb ttim ttms ttss tttt tubb tubo tubr tubs tubu tucc tuco tudi tudu tuim tuis tuit tuiu tumb tumi tums tumu tuor tuos turb turc turd turi turm turo turr turs turt turu tusc tusd tusi tusm tuss tust tuti tuto tuts tutt tutu tuum tuuo ubbi ubbo ubic ubid ubii ubir ubis ubit uboc ubod ubos ubud ucbc ucci ucdc ucdd ucio ucmc ucom ucos ucrc ucsb ucsc ucsd ucsm ucst ucsu ucut udbc uddi udds udic udid udim udir udmc udoo udos udot udsd udts uims uirr uisd uist uits umb- umbi umbo umit ummo umms umor umri umsu umts umus umut uocc uomo uor- urbi urbs urci urds urdu urib uric urim uris uriu urmi uro- urom uroo urri ursi urso urss ursu urts urum urur urus urut usbc usbr usbs uscc uscm usco uscs usdc usdm usdo usds usdt usim usis usmc usmd usmm usms usoc usoi usos ussb ussc ussr usss usst ussu ustb ustc usti ustm usto usts usui usus utid utis utmb utor utri utsc utti utto uttu uuoc uuri uusi uuuu