spsp spss spud spui spus sscc ssci sscp sscs ssdc ssdd ssdp ssid ssis sslc sslp ssoc ssop sspc sspl sspo ssps sssc sssi ssss suc- succ suci sucs sudd sudi sudo suds suid suio suis sul- sulc suld suli sull sulo sulp sulu suos sup- supo supp sups sus- susd susi suso susp suss susu suus ucci uccp ucdc ucdd ucil ucio ucos ucsc ucsd ucsu uddi udds udic udid udoo udop udos udpd udsd udsl uipi uisd ulcc ulco ulic ulli ullo ulo- uloc ulos ulul ulus uocc uolc upci upcs updo upic upis uplo upos uppc uppp uppu upsc upsi upup uscc usco uscs usdc usdl usdo usdp usds usip usis uslp uslu usoc usoi usos uspc uspo uspp usps ussc usss ussu usui usul usus uucp uulu uuoc uusi uuuu