rcsc rcss rmas rmbs rmrp rmsc rmsp rpca rpcs rpms rpps rras rrmc rrmp rrrr rrsp rrum rsaa rscc rscs rsma rspb rsps rssa rsua rsum ruas ruba rubb rubp rubs rubu ruca ruma rumb rumm rump rums rupa rupp rura rurc rurp rurs ruru rusa russ rusu sa-c saab saac saam saap saar saas saba sabb sabc sabr sabs sabu saca sacc sacr sacs sacu sam- sama samc samm samp sams samu sapa sapp saps sara sarc sarm sarp sarr sars saru sasa sasc sasm sass saua sauc saum saup saur saus sbaa sbac sbar sbas sbbs sbca sbcc sbcs sbma sbmc sbsa sbsp sbus scaa scab scac scam scap scar scas scba sccc sccm sccp sccs scma scmc scmm scmp scms scpa scpb scpm scps scr- scra scrc scrs scsa scsc scsr scsu scua scub scum scup scur smaa smac smap smas smba smbc smcc smcp smpa smps smsc smsp smss smur smus sp-a spac spam spap spar spas spau spca spcc spcs spma spms spps sprm sprs spsa spsp spss spur spus sram sras srbc srcc srmc srpc srps srsp srub ssaa ssab ssac ssam ssap ssas ssau ssbr ssca sscc sscp sscs ssmc sspa sspc ssps ssra ssrc ssrm ssrs sssa sssb sssc sssm ssss suam suar suas sub- suba subb subm subs suc- succ sucr sucs sum- suma sump sums sumu sup- supa supp supr sups sur- sura surc surp surr surs suru sus- susa susp suss susu suum suus u-rp uabc uaca uamc uams uarc uars uaru uasa uasp uaua ubac ubar ubba ubpc ubra ucam ucar ucas ucbc ucca uccp ucmc ucpa ucpb ucrc ucsa ucsb ucsc ucsm ucsu ucua umaa umac umap umar umas umb- umba umma umms umpc umps umra umsa umsp umsu umus upac upar upas upca upcs upma upmc uppa uppc uppp uppu upra upsa upsc upup urac urap uras urau urba urbs urca urma urra ursa urss ursu urum urup urur urus us-a usaa usac usap usar usas usba usbc usbr usbs usca uscc uscm uscs usma usmc usmm usmp usms uspa uspc uspp usps usra ussa ussb ussc ussr usss ussu usua usus uucp uuuu