sekk seku sema semc seme semp sems semu sepa sepe sepp sepr seps sepu sera serc sere serk serm serp serr sers seru sesa sesc sese sess seur skac skap skar skee skem skep sker skes skpc skra skss skua skue skum skup skur smaa smac smak smap smas smcc smcp smea smec smee smep smpa smps smrk smsc smsp smss smur smus sp-a spac spae spak spam spap spar spas spau spca spcc spcs spea spec spee spek sper spes spke spkr spma spme spms spps sprm sprs spsa spse spsp spss spue spur spus sram sras srcc srec srem sres srmc srpc srps srsp ssaa ssac ssam ssap ssas ssau ssca sscc ssce sscp sscs ssec ssee ssem ssep sses ssmc sspa sspc sspe ssps ssra ssrc ssrm ssrs sssa sssc sssm ssss suam suar suas suc- succ suck sucr sucs suee suer sues sueu suka suke suks suku sum- suma sume sump sums sumu sup- supa supe supp supr sups sur- sura surc sure surp surr surs suru sus- susa suse susk susp suss susu suum suus u-rp uaca uaes uamc uams uarc uars uaru uasa uasp uaua ucak ucam ucar ucas ucca uccp ucea uces ucka ucmc ucpa ucrc ucsa ucsc ucsm ucsu ucua uers uess ukcc ukek ukes ukeu ukma ukpa ukps ukra ukrc uksa uksc ukum ukup ukur umaa umac umak umap umar umas umec umer umes umka umma umms umpc umpe umps umra umsa umsp umsu umus upac upar upas upca upcs upma upmc upme uppa uppc uppe uppp uppu upra upsa upsc upse upup urac urap uras urau urca ure- urea ures urka urke urma urra urre ursa urse urss ursu uruk urum urup urur urus us-a us-k usaa usac usak usap usar usas usca uscc usce uscm uscs usea usee user uses uska uske usma usmc usme usmm usmp usms uspa uspc uspp usps usra ussa ussc usse ussr usss ussu usua usus uucp uuuu