rrfc rrif rrrr rscc rscs rsfc rsis rslc rsos rssl rsts rstu rtcc rtfc rtls rtlt rtss rtts ruci ruct rufc ruff rufo ruft ruif ruis ruit rull rulo rurc ruri ruro rurs ruru rusi ruso russ rust rusu ruti rutl ruto ruts rutt rutu s-ic s-ii s-os sccc sccl sccs scct scfc scfi sci- scic scif scil scio scir scis scit scl- sclc scls scol scoo scor scot scr- scrc scri scrs scsc scsi scsl scso scsr scst scsu sctc sctl scto sctr scts scul scur scut sfcc sfco sfcs sffc sfio sflc sfls sfor sfos sfrc sfro sfss sfsu sfts sicc sici sico sics sicu siff sifl sifo sifr sift sifu siit sil- silc silf sili sill silo sils silt silu siol sior sios siot siou sirc sirf siri siro sirr sirs sirt siru sisc sisi siss sist sisu sit- sitc siti sito sits sitt situ siui sius siut sl-i slcc slcu slft slic slir slit sloc sloo slos slot slrc slrs slsc slst slsu slts sluc slur slut soci socl soco socr socs sofi sofo soft soic soif soil soir sois soit solf soli soll solo solr sols solt soof sool soor soos soot sori soro sorr sors sort soru sosi soso soss sost sotc sotl soto sots sotu souf soul sour sous sout srcc srct srfc srfi sris sros srtr sscc ssci sscs ssfc ssfl ssis ssit sslc sslt ssoc ssot ssrc ssri ssrl ssrs sssc sssf sssi ssss sstc sstl ssts stcc stcs stcu stfc stfu stic stif stil stio stir stis stit stlc stlo stlt stof stol stoo stor stos stot stou strc stri stro strs stru stsf stsi stss sttc sttr stuc stuf stul stur stus stut suc- succ suci sucr sucs suf- sufc suff sufi sufr sufs sufu suio suir suis suit sul- sulc sulf suli sull sulo sult sulu suor suos sur- surc surf suri suro surr surs surt suru sus- susi suso suss sust susu suti suto sutu suus tccc tccu tcfc tcos tctc tcts tcul tfcu tfot tfrs tfsi tfss tftc ticc tico tics tiff tifo tift tiit tiiu till tilo tilr tils tilt tios tiou tiri tirl tiro tirr tirs tiru tisi tiso tiss tist titc titi tito tits titt titu tlco tlli tlos tlrs toci toco toff tofi tofo toft tofu toil tois toit tol- toli toll tolo tolt tolu toof tool toor toos toot torc torf tori toro torr tors tort toru tosc tosi toso toss tost tosu totc toti toto totr tots tott toui toul tour tous tout trcc trcl trfc trfr tri- tric trif tril trio tris trit troc troi troo tros trot trou trsi trst trtc trtr truc trus trut truu tscc tsfc tsfl tsis tsoi tsol tsos tsou tssf tssi tssr tsst tstc tsts tsui ttfc ttff ttss tttt ttul tucc tuco tufc tuff tufi tufo tuft tufu tuil tuis tuit tuiu tuli tull tulo tulu tuor tuos turc turf turi turo turr turs turt turu tusc tusi tuss tust tuti tutl tuto tuts tutt tutu tuuo ucci ucil ucio ucos ucrc ucsc ucsf ucst ucsu ucut ufcu ufos uirr uist uits ulcc ulco ulft ulic ulli ullo ullr ulo- uloc ulos ulti ulto ults ultt ulul ulus uocc uofl uofo uolc uor- urci urff urfi urft uric urif uris uriu urls uro- urol uroo urri ursi urso urss ursu urts urur urus urut uscc uscf usco uscs usfc usfi usfl usfs usif usis uslu usoc usoi usos ussc ussf ussr usss usst ussu ustc usti usto usts usui usul usus utfo util utis utor utri utsc utsl utti utto uttu uulu uuoc uuri uusi uutf uuuu