sood sook soor soos soot sorb sord sore soro sorr sors sort sose soso soss sost sote sotk soto sots srde sreb sreo sres sros srsd srtr ssbr ssdd ssee sses sset ssot ssrs sssb ssss sstb sstd ssts stbd stbs stds sted stee stek steo ster stes stet stks stob stod stoe stok stoo stor stos stot strd stre strk stro strs stss sttd sttr tbbs tbrb tbst tddb tdes tdkr tdor tdse tdss tebo tedd tede tedk teds teed teek teer tees teet teke teok teor teos ter- tere terk tero terr ters tesd tese teso tess test tete teto tetr tets tett tkod tkos tkts tobe tobo tobs tobt todd tode todo tods todt toed toee toek toer toes toet toke toko tood took toor toos toot tord tore tork toro torr tors tort tosb tose tosk toso toss tost totd tote toto totr tots tott tre- tred tree trek treo tres tret trod troe troo tros trot trsd trst trte trtr tsbd tsdb tses tset tsks tsob tsos tsse tssr tsst tsts ttbb tteo tter ttoe ttss tttt