piai pias piat pibb pibi pica picc pici picr pics pict piia piip pipa pipi pipp pips pira pirc piri pirr pirs pisa pisi piss pist pita piti pitr pits pitt ppac ppap ppar ppcc ppci ppcs ppib ppic pppa pppp ppps pprc ppss ppta ppts pptt prai prar pras prat prbc prbs prca prcc prcp prcs pri- pria prii pris prps prri prrs prsa prsc prsi prss prtc prti prtp prtr psac psap psas psat psbr psbt psca psci psia psip psis pspi pspp pspr psps psrp pssa pssc psst psts ptab ptas ptca ptcc ptsa pttc raab raas raat raba rabb rabi rabs rac- raca racc raci racs ract raia raic raii raip rair rais rait rapa rapc rapi rapp raps rapt rara rarb rari rars rasa rasc rasi rasp rass rast rata rati ratp rats ratt rbbb rbbr rbbs rbis rbsp rbss rbst rcac rcas rcbc rccb rccc rccs rcic rcis rcpi rcps rcpt rcsa rcsc rcsi rcss rctc rcti rcts riaa riab riai rias riat rib- riba ribs rica ricc rics rict riia riis ripa ripi ripp ripr rips ript riri rirs risa risc risi risp riss rist rita riti rits ritt rpca rpcs rpii rpps rpta rpts rras rrat rrrr rrsp rsaa rsai rsbi rscc rscs rsis rspb rsps rssa rstp rsts rtai rtas rtca rtcc rtpa rtps rtss rttp rtts s-ib s-ic s-ii sa-c saab saac saap saar saas saat saba sabb sabc sabi sabr sabs saca sacc saci sacr sacs sact saia saic saip sair sais sait sapa sapi sapp saps sara sarc sari sarp sarr sars sart sasa sasc sasi sass sast sata satb satc sati satr sats satt sbaa sbac sbai sbar sbas sbbs sbca sbcc sbcs sbct sbia sbic sbsa sbsi sbsp sbst sbtc scaa scab scac scai scap scar scas scat scba scbi sccc sccp sccs scct sci- scia scic scip scir scis scit scpa scpb scpi scps scpt scr- scra scrc scri scrs scsa scsc scsi scsr scst sctc sctr scts siaa siab siac siai sias siat siba sibc sibi sibs sica sicc sici sicp sics siit sipa sipc sipi sipp sips sipt sira sirc siri sirp sirr sirs sirt sisa sisc sisi siss sist sit- sita sitc siti sits sitt sp-a spac spap spar spas spat spca spcc spcs spia spib spic spip spir spis spit spps spri sprs spsa spsp spss spst spta sptb sptc sptr spts sras srbc srcc srct srib sris srpc srps srpt srsp srta srtp srtr ssaa ssab ssac ssap ssas ssat ssbr ssca sscc ssci sscp sscs ssis ssit sspa sspc ssps sspt ssra ssrc ssri ssrs sssa sssb sssc sssi ssss ssta sstb sstc sstp ssts stab stac stai stap star stas stat stbc stbs stca stcc stcp stcs stia stib stic stip stir stis stit stpp stps stra strc stri strs stsi stss sttc sttr taa- taar taas taat taba tabb tabc tabi tabs taca tacc taci tacs tact taia taip tair tais tait tapa tapi tapp tapr taps tapt tara tarb tarc tari tarp tarr tars tart tasa tasb tasc tasi tasp tasr tass tast tata tatb tati tatr tats tatt tbar tbas tbbs tbca tbcb tbcc tbit tbrb tbsp tbst tbta tbtp tcap tcbs tcca tccc tcpa tctc tcts tiaa tiab tiar tias tiba tibi tibs tica ticc tics tiit tip- tipa tipc tipi tipp tips tipt tira tirb tiri tirr tirs tisa tisb tisi tiss tist tita titc titi titp tits titt tpac tpap tpcp tpcs tpia tpir tppa tppp tppr tprs tpsa tpsc tptp tptr traa trab trac trai trap tras trat trca trcc tri- tria trib tric trip tris trit trpa trpc trpp trps trra trsi trst trtc trtr tsaa tsai tsar tsat tsbc tsca tscc tscp tsia tsis tsps tspt tssa tssi tssr tsst tstc tsts ttab ttbb ttcp ttss tttt