ppts pptt prae prar pras prat prbc prbs prca prcc prcp prcs pre- preb prec pree prep pres pret prps prrs prsa prsc prse prss prtc prtp prtr psac psap psas psat psbr psbt psca pseb psec pspp pspr psps psrp pssa pssc psse psst psts ptab ptas ptca ptcc pter ptsa pttc raab raas raat raba rabb rabe rabs rac- raca racc race racs ract raec raep raer raes rapa rapc rape rapp raps rapt rara rarb rare rars rasa rasc rase rasp rass rast rata rate ratp rats ratt rbbb rbbr rbbs rbsp rbss rbst rcac rcas rcbc rccb rccc rccs rcep rcet rcps rcpt rcsa rcsc rcss rctc rcts rea- reac reae reap rear reas reat reba rebb rebe rebs reca recc rece recp recr recs rect reeb reep rees reet repe repp repr reps rept rera rere rers rert resa rese resp ress rest reta rete retr rets rett rpca rpcs rpet rpps rpta rpts rras rrat rrrr rrsp rsaa rscc rscs rsee rspb rsps rsre rssa rstp rsts rtas rtca rtcc rtce rtee rtes rtpa rtps rtss rttp rtts sa-c saab saac saae saap saar saas saat saba sabb sabc sabe sabr sabs saca sacc sace sacr sacs sact saeb saer saes sapa sape sapp saps sara sarc sare sarp sarr sars sart sasa sasc sase sass sast sata satb satc sate satr sats satt sbaa sbac sbar sbas sbbs sbca sbcc sbcs sbct sber sbsa sbse sbsp sbst sbtc scaa scab scac scap scar scas scat scba sccc scce sccp sccs scct scea scec scee scep scer scet scpa scpb scpe scps scpt scr- scra scrc scre scrs scsa scsc scsr scst sctc sctr scts se-c se-e se-s se-t seaa seab seac seap sear seas seat seba sebe sebs sebt sec- seca secc sece secr secs sect seea seeb seec seep seer sees seet sepa sepe sepp sepr seps sept sera serb serc sere serp serr sers sert sesa sesc sese sess sest set- seta setc sete sets sett sp-a spac spae spap spar spas spat spca spcc spcs spea speb spec spee sper spes spet spps sprs spsa spse spsp spss spst spta sptb sptc sptr spts sras srbc srcc srct sreb srec sres srpc srps srpt srsp srta srtp srtr ssaa ssab ssac ssap ssas ssat ssbr ssca sscc ssce sscp sscs ssec ssee ssep sses sset sspa sspc sspe ssps sspt ssra ssrc ssrs sssa sssb sssc ssss ssta sstb sstc sstp ssts stab stac stae stap star stas stat stbc stbs stca stcc stcp stcs stea stec stee step ster stes stet stpp stps stra strc stre strs stss sttc sttr taa- taar taas taat taba tabb tabc tabe tabs taca tacc tace tacs tact taec taer taes tapa tape tapp tapr taps tapt tara tarb tarc tare tarp tarr tars tart tasa tasb tasc tase tasp tasr tass tast tata tatb tate tatr tats tatt tbar tbas tbbs tbca tbcb tbcc tbce tbrb tbsp tbst tbta tbtp tcap tcbs tcca tccc tcep tcpa tctc tcts teac tear teas teat teba teca tecr tecs tect teec teer tees teet tepa tepe tepp ter- tera terc tere terp terr ters tesa tesc tese tesp tess test teta tete tetr tets tett tpac tpap tpcp tpcs tper tppa tppp tppr tprs tpsa tpsc tpte tptp tptr traa trab trac trae trap tras trat trca trcc tre- trea trec tree tres tret trpa trpc trpe trpp trps trra trst trtc trte trtr tsaa tsar tsat tsbc tsca tscc tscp tsec tses tset tsps tspt tssa tsse tssr tsst tstc tsts ttab ttbb ttcp tter ttss tttt