skoe skol skor skot skrt skss sleb slee sler sles slet slob sloe sloo slos slot slre slrs slst slts sobe sobo sobr sobs sobt soel soeo soes soke sokk soko sole solk soll solo solr sols solt sook sool soor soos soot sorb sore soro sorr sors sort sose soso soss sost sote sotk sotl soto sots sreb sreo sres sros srtr ssbr ssee sses sset ssle sslt ssot ssrl ssrs sssb ssss sstb sstl ssts stbs stee stek stel steo ster stes stet stks stle stlo stlt stob stoe stok stol stoo stor stos stot stre strk stro strs stss sttr tbbs tbrb tbst tebo teek teel teer tees teet teke tel- tele tell telo tels telt teok teor teos ter- tere terk tero terr ters tese tesl teso tess test tete teto tetr tets tett tkol tkos tkts tlos tlrs tobe tobo tobs tobt toee toek toer toes toet toke toko tol- tole tolk toll tolo tolt took tool toor toos toot tore tork toro torr tors tort tosb tose tosk toso toss tost tote toto totr tots tott tre- tree trek treo tres tret troe troo tros trot trst trte trtr tses tset tsks tsob tsol tsos tsse tssr tsst tsts ttbb tteo tter ttoe ttss tttt