pies piff pifs piip pipe pipi pipp pips pirc pire piri pirr pirs piru pisd pise pisi piss pisu pius ppcc ppcd ppci ppcs ppds pper ppic ppid ppie ppif pppd pppp ppps pprc pprf ppru ppsf ppss ppur prcc prcd prcf prcp prcs pre- prec pred pree pref prep pres preu prfc prfs pri- prid prie prif prii pris prpd prps prrd prri prrs prsc prsd prse prsi prss prud prue pruf prus pruu psci pscu psdc psdi psdp psdr psds psec psei psfs psid psip psis pspi pspp pspr psps psrd psrp pssc psse pu-e puce puds pudu pued puer pueu puff puid puir puis puiu pupe pupi pups pupu pur- pure puri purp purr purs puru pusd pusi puss puuc rccc rccs rcdc rcde rcds rcep rcfc rcic rcid rcis rcpd rcpi rcps rcrd rcsc rcsd rcsi rcss rder rdpc recc recd rece reci recp recr recs recu redc redd rede redi redr reds redu reed reef reep rees refd refe reff refi refr refs refu reid reif reii reir reis reiu repe repi repp repr reps repu rerd rere reri rers reru rese resi resp ress reue reuf reup reus reuu rfdi rfds rfef rffc rfic rfid ricc rice rics ridc ridd ride ridi rids ried rief riep rier ries rieu rife riff rifs rifu riif riis ripd ripe ripi ripp ripr rips rire riri rirs risc risd rise risi risp riss risu riue rius rpcs rpdp rpfc rpii rpps rred rrfc rrif rrrr rrsp rscc rscs rsdd rsds rsee rsfc rsid rsis rsps rsre ruce ruci rudd rude rudi rudp ruds rued ruer rues rufc rufe ruff ruid ruif ruis rupe rupp rurc rurd rure ruri rurp rurs ruru ruse rusi russ rusu ruud s-ic s-ii sccc scce sccp sccs scdc scdf scdp scds scec scee scep scer scfc scfe scfi sci- scic scid scie scif scip scir scis scpe scpi scps scr- scrc scre scri scrs scsc scsd scsi scsr scsu scud scup scur sdcc sddc sdds sdef sdep sder sdes sdfc sdic sdif sdpr sdps sdrc sdrs sdsc sdsf sdss sdsu se-c se-d se-e se-f se-i se-s se-u sec- secc secd sece secr secs secu sede seds seec seed seef seep seer sees seeu seff sefi seid seie seif seii seip seir seis seiu sepd sepe sepi sepp sepr seps sepu serc serd sere serf seri serp serr sers seru sesc sese sesi sess seui seur sfcc sfcs sfdc sfer sffc sfpc sfpd sfrc sfss sfsu sicc sice sici sicp sics sicu sidd side sidi sidr sids siec sied sief sier sies sife siff sifr sifu sipc sipe sipi sipp sips sirc sire sirf siri sirp sirr sirs siru sisc sisd sise sisi siss sisu siue siui sius spcc spcs spdc spde spdf spdp spdr spec sped spee spef sper spes spfc spfs spic spie spip spir spis sppd sppf spps sprd spri sprs spsd spse spsp spss spud spue spui spur spus srcc srde srec sres srfc srfi sris srpc srps srsd srsp sscc ssce ssci sscp sscs ssdc ssdd ssdf ssdp ssec ssee ssep sses ssfc ssfp ssid ssis sspc sspe sspf ssps ssrc ssri ssrs sssc sssf sssi ssss suc- succ suci sucr sucs sudd sude sudi suds sued suee suer sues sueu suf- sufc suff sufi sufr sufs sufu suid suie suir suis sup- supe supp supr sups sur- surc surd sure surf suri surp surr surs suru sus- susd suse susi susp suss susu suus u-ie u-rp ucci uccp ucdc ucdd uces ucrc ucsc ucsd ucsf ucsu uddi udds uder udic udid udir udpd udsd ueir uepi uers uess ufcu ufer uffe ufip uies uipi uirr uisd uise upci upcs updf uped upic upie upis uppc uppe uppp uppu upri upsc upse upsi upup urci urde urds urdu ure- ured ures urfe urff urfi uric urie urif uris uriu urre urri urse ursi urss ursu urup urur urus uscc usce uscf uscs usdc usde usdf usdp usds used usee usef user uses usfc usfi usfs usie usif usip usis uspc uspp usps ussc usse ussf ussr usss ussu usui usus uucp uuri uusi uuuu