slre slrp slrs slsc slsu sluc slue slup slur soce socl soco socr socs soec soel soeo soep soes sole soll solo solp solr sols sool soop soor soos sope sopo sopp sops sopu sore soro sorr sors soru sose soso soss soue soul soup sour sous spcc spco spcs spec spee spel sper spes splc sple splo splp splr spls spoc spoo spop spor spos spps spro sprs spse spso spsp spss spue spur spus srcc srec sreo sres sros srpc srps srsp sscc ssce sscp sscs ssec ssee ssep sses sslc ssle sslp ssoc ssop sspc sspe sspl sspo ssps ssrc ssrl ssrs sssc ssss suc- succ sucr sucs suee suel suer sues sueu sul- sulc sule sull sulo sulp sulu suor suos sup- supe supo supp supr sups sur- surc sure suro surp surr surs suru sus- suse suso susp suss susu suus u-rp uccp ucel uces ucos ucrc ucsc ucsu uele uell uers uess ulcc ulco ulee uleo ules ulle ullo ullr ulo- uloc ulos ulul ulus uocc uolc uor- uore upcs uplo upor upos uppc uppe uppp uppu upsc upse upup ure- ures urle urls uro- urol uroo urpo urre urse urso urss ursu urup urur urus uscc usce usco uscs usee usel user uses usle uslp uslu usoc usoe usos uspc uspo uspp usps ussc usse ussr usss ussu usul usus uucp uulu uuoc uuuu