puir puis puiu pupa pupi pups pupu pur- pura purb puri purp purr purs puru pusa pusi puss puuc raab raas raba rabb rabi rabs rabu rac- raca racc raci racs racu raia raic raii raip rair rais raiu rapa rapc rapi rapp raps rara rarb rari rars rasa rasc rasi rasp rass rasu raua raub rauc raup raus rbbb rbbr rbbs rbis rbsp rbss rcac rcas rcbc rccb rccc rccs rcic rcis rcpi rcps rcsa rcsc rcsi rcss riaa riab riai rias riau rib- riba ribs ribu rica ricc rics riia riis ripa ripi ripp ripr rips riri rirs risa risc risi risp riss risu rius rpca rpcs rpii rpps rras rrrr rrsp rsaa rsai rsbi rscc rscs rsis rspb rsps rssa rsua ruas ruba rubb rubi rubp rubs rubu ruca ruci ruis rupa rupp rura rurc ruri rurp rurs ruru rusa rusi russ rusu s-ib s-ic s-ii sa-c saab saac saap saar saas saba sabb sabc sabi sabr sabs sabu saca sacc saci sacr sacs sacu saia saic saip sair sais sapa sapi sapp saps sara sarc sari sarp sarr sars saru sasa sasc sasi sass saua sauc saup saur saus sbaa sbac sbai sbar sbas sbbs sbca sbcc sbcs sbia sbic sbsa sbsi sbsp sbus scaa scab scac scai scap scar scas scba scbi sccc sccp sccs sci- scia scic scip scir scis scpa scpb scpi scps scr- scra scrc scri scrs scsa scsc scsi scsr scsu scua scub scup scur siaa siab siac siai sias siau siba sibc sibi sibs sibu sica sicc sici sicp sics sicu sipa sipc sipi sipp sips sira sirc siri sirp sirr sirs siru sisa sisc sisi siss sisu siui sius sp-a spac spap spar spas spau spca spcc spcs spia spib spic spip spir spis spps spri sprs spsa spsp spss spui spur spus sras srbc srcc srib sris srpc srps srsp srub ssaa ssab ssac ssap ssas ssau ssbr ssca sscc ssci sscp sscs ssis sspa sspc ssps ssra ssrc ssri ssrs sssa sssb sssc sssi ssss suar suas sub- suba subb subi subs suc- succ suci sucr sucs suir suis sup- supa supp supr sups sur- sura surc suri surp surr surs suru sus- susa susi susp suss susu suus u-rp uabc uaca uair uarc uars uaru uasa uasp uaua ubac ubar ubba ubbi ubic ubii ubir ubis ubpc ubra ucai ucar ucas ucbc ucca ucci uccp ucpa ucpb ucrc ucsa ucsb ucsc ucsu ucua uica uipi uira uirr upac upar upas upca upci upcs upic upis uppa uppc uppp uppu upra upri upsa upsc upsi upup urac urai urap uras urau urba urbi urbs urca urci uria urib uric uris uriu urra urri ursa ursi urss ursu urup urur urus us-a usaa usac usap usar usas usba usbc usbr usbs usca uscc uscs usia usip usis uspa uspc uspp usps usra ussa ussb ussc ussr usss ussu usua usui usus uucp uuri uusi uuuu