stbs stcc stcs stib stic stil stio stis stit stlc stln stlo stlt stnn stns stob stol ston stoo stos stot stsi stss sttc tbbs tbcb tbcc tbil tbit tbst tcbs tccc tcnn tcon tcos tctc tcts tibi tibs ticc tico tics tiit till tiln tilo tils tilt tinc tini tinn tino tins tint tion tios tisb tisi tiso tiss tist titc titi tito tits titt tlco tlli tlon tlos tnbc tncc tnts tobi tobo tobs tobt toci toco toil tois toit tol- toli toll tolo tolt tonb toni tonn tono tons tool toon toos toot tosb tosc tosi toso toss tost totc toti toto tots tott tsbc tscc tsin tsis tsob tsoi tsol tsos tssi tsst tstc tsts ttbb ttcn tton ttss tttt