rpos rppn rpps rptn rpts rrif rrrr rrsp rsis rslp rsnn rsno rsnr rsos rspo rsps rssl rstp rsts rtls rtlt rtns rtps rtss rttp rtts s-ii s-os sfio sfls sfnt sfor sfos sfro sfss sftp sfts siff sifl sifo sifr sift siit sil- silf sili sill silo sils silt sini sinn sino sinp sins sint siol sion siop sior sios siot sipi sipo sipp sips sipt sirf siri siro sirp sirr sirs sirt sisi siss sist sit- siti sitn sito sits sitt sl-i slft slip slir slit slln sllp slon sloo slop slos slot slpi slpp slps slrn slrp slrs slst slts snip snir snit snlf snns snoo snop snor snos snot snpo snpp snrs sntr sofi sofo soft soif soil soin soir sois soit solf soli soll soln solo solp solr sols solt son- soni sono sons sont soof sool soon soop soor soos soot sopi sopo sopp sops sori sorn soro sorr sors sort sosi soso soss sost sotl sotn soto sotp sots spfs spin spio spip spir spis spit splo splp splr spls spns spon spoo spop spor spos spot sppf spps spri spro sprs spso spsp spss spst spto sptr spts srfi sris srni srnn srno sros srps srpt srsp srtp srtr ssfl ssfp ssin ssis ssit sslp sslt ssns ssop ssot sspf sspl sspo ssps sspt ssri ssrl ssrs sssf sssi ssss sstl sstp ssts stfn stif stil stio stip stir stis stit stln stlo stlt stnn stnr stns stof stol ston stoo stop stor stos stot stpf stpp stps stri strn stro strs stsf stsi stss sttr tfin tfnp tfot tfpt tfrs tfsi tfss tftp tiff tifo tift tiit till tiln tilo tilr tils tilt tini tinn tino tins tint tion tiop tios tip- tipi tipo tipp tips tipt tiri tirl tiro tirr tirs tisi tiso tiss tist titi tito titp tits titt tlli tlon tlos tlrs tnfl tnsp tnts toff tofi tofo toft toil tois toit tol- toli toll tolo tolt toni tonn tono tons toof tool toon toor toos toot top- topf topi topo topp tops topt torf tori torn toro torp torr tors tort tosi toso toss tost toti toto totr tots tott tpir tpls tpol tpon tppp tppr tprs tptp tptr trfr tri- trif tril trin trio trip tris trit trno troi tron troo trop tros trot trpn trpp trps trsi trst trtr tsfl tsin tsis tsoi tsol tsop tsos tspn tspo tsps tspt tssf tssi tssr tsst tsts ttff ttfn tton ttop ttss tttt