rstu rtcc rtdt rtnd rtns rtps rtss rttp rtts ruci ruct rudd rudi rudp ruds ruid ruin ruis ruit runc rund runi runn runs runt rupp rupt rurc rurd ruri rurp rurs ruru rusi russ rust rusu ruti ruts rutt rutu ruud ruun s-ic s-ii sccc sccp sccs scct scdc scdp scds sci- scic scid scin scip scir scis scit scnd scnr scnt scpi scps scpt scr- scrc scri scrn scrs scsc scsd scsi scsn scsr scst scsu sctc sctd sctn sctr scts scud scun scup scur scut sdcc sddc sdds sdic sdpr sdps sdrc sdrs sdsc sdss sdsu sicc sici sicp sics sicu sidd sidi sidr sids siit sind sini sinn sinp sins sint sinu sipc sipi sipp sips sipt sirc siri sirp sirr sirs sirt siru sisc sisd sisi siss sist sisu sit- sitc sitd siti sitn sits sitt situ siui sius siut sncc sncp snid snip snir snit snns snpp snrs snsd sntr snur snus spcc spcs spdc spdp spdr spdt spic spin spip spir spis spit spns sppd spps sprd spri sprs spsd spsp spss spst sptc sptr spts spud spui spun spur spus sput srcc srct sris srni srnn srpc srps srpt srsd srsp srtp srtr sscc ssci sscp sscs ssdc ssdd ssdp ssid ssin ssis ssit ssns sspc ssps sspt ssrc ssri ssrs sssc sssi ssss sstc sstd sstp ssts stcc stcp stcs stcu stds stic stid stip stir stis stit stnd stnn stnr stns stpd stpp stps strc strd stri strn strs stru stsi stss sttc sttd sttr stuc stud stun stup stur stus stut suc- succ suci sucr sucs sudd sudi suds suid suin suir suis suit sun- sund suni sunn suns sunt sunu sup- supp supr sups supt sur- surc surd suri surn surp surr surs surt suru sus- susd susi susp suss sust susu suti sutu suus tccc tccu tcdd tcnn tctc tcts tdis tdri tdss ticc tics tidc tidd tids tiit tiiu tinc tind tini tinn tins tint tinu tip- tipc tipi tipp tips tipt tipu tird tiri tirr tirs tiru tisi tiss tist titc titi titp tits titt titu tncc tndd tnsp tnts tnut tpcd tpcp tpcs tpdu tpir tppd tppp tppr tprs tpsc tptp tptr tput trcc tri- tric trin trip tris trit trpc trpn trpp trps trsd trsi trst trtc trtr truc trud trun trus trut truu tscc tscp tsid tsin tsis tspn tsps tspt tssi tssr tsst tstc tsts tsui tsun tsup ttcn ttcp ttss tttt tucc tudi tudu tuin tuis tuit tuiu tunc tund tuni tunn tuns tunu tupi tups tupu turc turd turi turn turp turr turs turt turu tusc tusd tusi tuss tust tuti tuts tutt tutu u-rp ucci uccp ucdc ucdd ucin ucrc ucsc ucsd ucst ucsu ucut uddi udds udic udid udin udir udpd udsd udts udun uint uipi uirr uisd uist uits uncc unci uncp uncs unct undi unds uni- unic unii unin unir unis unit unni unns unpc unps unrs uns- unsc unst unts unus unut upci upcs upic upin upis upnp uppc uppp uppu upri upsc upsi upup urci urds urdu uric urin uris uriu urni urns urri ursi urss ursu urts urun urup urur urus urut uscc uscs usdc usdp usds usdt usin usip usis usnc usnr usnu uspc uspp usps ussc ussr usss usst ussu ustc usti ustp usts usui usun usus utid utin utis utpd utri utsc utti uttu uucp uuni uuri uusi uuuu