sccc sccm sccs scct scdc scds sck- scmc scmm scms scr- scrc scrs scsc scsd scsr scst scsu sctc sctd sctr scts scub scud scum scur scut sdcc sddc sdds sdms sdrc sdrs sdsc sdsm sdss sdsu sdtm skrt sksd skss skud skum skur skut smbc smcc smdc smdr smkb smkd smrk smrt smsc smsd smss smtc smtd smtu smur smus smut srbc srcc srct srmc srsd srtr srub ssbr sscc sscs ssdc ssdd ssdm ssmc ssrc ssrm ssrs sssb sssc sssm ssss sstb sstc sstd ssts stbc stbd stbs stcc stcs stcu stdm stds stks stmc stms stmt strc strd strk strs stru stsm stss sttc sttd sttr stub stuc stud stuk stum stur stus stut sub- subb subd subm subs suc- succ suck sucr sucs sudd suds suks suku sum- sumd sums sumu sur- surc surd surr surs surt suru sus- susd susk suss sust susu sutu suum suus tbbs tbcb tbcc tbcd tbrb tbst tcbs tccc tccu tcdd tctc tcts tddb tdkr tdss tkts tmbc tmbr tmcc tmcm tmmk tmsc tmtt trcc trmb trmd trmk trms trmu trsd trst trtc trtr trub truc trud truk trus trut truu tsbc tsbd tscc tsdb tsks tsmc tssm tssr tsst tstc tstm tsts tsum ttbb ttms ttss tttt tubb tubr tubs tubu tucc tuck tudu tuks tumb tums tumu turb turc turd turk turm turr turs turt turu tusc tusd tusk tusm tuss tust tuts tutt tutu tuum ubud ucbc ucdc ucdd ucmc ucrc ucsb ucsc ucsd ucsm ucst ucsu ucut udbc udds udmc udsd udts uduk ukcc ukrc uksc ukum ukur umb- umms umsu umts umus umut urbs urds urdu urss ursu urts uruk urum urur urus urut us-k usbc usbr usbs uscc uscm uscs usdc usdm usds usdt usmc usmd usmm usms ussb ussc ussr usss usst ussu ustb ustc ustm usts usus utmb utsc uttu uuuu