sthn sths stks stnn stnr stns stok ston stoo stor stos stot strc strk strn stro strs stss sttc sttr tccc tch- tchh tcho tchr tchs tcnn tcon tcos tcsh tctc tcts thch thnk thnt thon thoo thor thos thot thro thsr thss thtr thts tkon tkos tkts tncc tnks tnsh tnts toch tock toco toho toko tonh tonk tonn tono tons tooh took toon toor toos toot torc tork torn toro torr tors tort tosc tosh tosk toso toss tost totc toth toto totr tots tott trcc trhs trno troc tron troo tros trot trst trtc trtr tscc tshs tsks tsos tssr tsst tstc tsts ttcn tton ttss tttt