skis skit skn- skon skop skor skot skpo skrt skss snip snir snit snns snoo snop snor snos snot snpo snpp snrk snrs sntr soik soin soir sois soit soki sokk sokn soko son- soni sonk sono sons sont sook soon soop soor soos soot sopi sopo sopp sops sori sorn soro sorr sors sort sosi soso soss sost sotk sotn soto sotp sots spik spin spio spip spir spis spit spkr spns spok spon spoo spop spor spos spot spps spri spro sprs spso spsp spss spst spto sptr spts sris srni srnn srno sros srps srpt srsp srtp srtr ssin ssis ssit ssns ssop ssot sspo ssps sspt ssri ssrs sssi ssss sstp ssts stik stio stip stir stis stit stks stnn stnr stns stok ston stoo stop stor stos stot stpp stps stri strk strn stro strs stsi stss sttr tiit tiki tiko tini tink tinn tino tins tint tion tiop tios tip- tipi tipo tipp tips tipt tiri tiro tirr tirs tisi tiso tiss tist titi tito titp tits titt tkip tkon tkos tkts tnik tnks tnpk tnsp tnts tois toit toki toko toni tonk tonn tono tons took toon toor toos toot top- topi topo topp tops topt tori tork torn toro torp torr tors tort tosi tosk toso toss tost toti toto totr tots tott tpir tpks tpon tppp tppr tprs tptp tptr tri- trik trin trio trip tris trit trno troi tron troo trop tros trot trpn trpp trps trsi trst trtr tsin tsis tsks tsoi tsop tsos tspn tspo tsps tspt tssi tssr tsst tsts tton ttop ttss tttt