spsp spss spud spui spus spy- spyh spys sscc ssci sscp sscs ssdc ssdd ssdm ssdp sshs ssid ssis ssmc sspc ssps sssc sssh sssi sssm ssss suc- succ such suci sucs sudd sudh sudi suds suhi suid suis sum- sumd sumi sump sums sumu sumy sup- suph supp sups supy sus- susd susi susp suss susu susy suum suus suyi suyu sych sydi syds syis sym- symi syms syph syss ucci uccp ucdc ucdd uchi uchs ucmc ucph ucsc ucsd ucsm ucsu uddi udds udic udid udim udmc udpd udsd uh-d uhid uhss uhuh uhup uims uipi uisd umhs umms umpc umph umps umsp umsu umus upci upcs updm upic upim upis upmc upmy uppc uppp uppu uppy upsc upsi upsy upup uscc usch uscm uscs usdc usdm usdp usds ushi ushs ushu usim usip usis usmc usmd usmm usmp usms uspc uspp usps ussc usss ussu ussy usui usus uucp uusi uuuu yccc ycch yhid yhis yhud yhyd yidi yids yidu yips yiss yiud ymci ymyd ypcc ypsi ysii yspi yssh yssu yudh yudu yuhi yumi yump yupi yups yush yuyu yyyy