sntr sobo sobr sobs sobt soik soin soir sois soit soki sokk sokn soko son- soni sonk sono sons sont sook soon soor soos soot sorb sori sorn soro sorr sors sort sosi soso soss sost sotk sotn soto sots srib sris srni srnn srno sros srtr ssbn ssbr ssin ssis ssit ssns ssot ssri ssrs sssb sssi ssss sstb ssts stbs stib stik stio stir stis stit stks stnn stnr stns stob stok ston stoo stor stos stot stri strk strn stro strs stsi stss sttr tbbs tbit tbrb tbst tibi tibs tiit tiki tiko tini tink tinn tino tins tint tion tios tirb tiri tiro tirr tirs tisb tisi tiso tiss tist titi tito tits titt tkon tkos tkts tnik tnks tnts tobi tobo tobs tobt tois toit toki toko tonb toni tonk tonn tono tons took toon toor toos toot tori tork torn toro torr tors tort tosb tosi tosk toso toss tost toti toto totr tots tott tri- trib trik trin trio tris trit trno troi tron troo tros trot trsi trst trtr tsin tsis tsks tsob tsoi tsos tssi tssr tsst tsts ttbb tton ttss tttt