sont soof soon soor soos soot sore sorn soro sorr sors sort sose soso soss sost sotc sote sotn soto sots srcc srct srec sreo sres srfc srnn srno sros srtr sscc ssce sscs ssec ssee sses sset ssfc ssns ssoc ssot ssrc ssrs sssc sssf ssss sstc ssts stcc stcs stec stee stef sten steo ster stes stet stfc stfn stnn stnr stns stoe stof ston stoo stor stos stot strc stre strn stro strs stsf stss sttc sttr tccc tcfc tcnn tcon tcos tctc tcts teco tecr tecs tect teec teef teen teer tees teet tefc teff teft tenc tene tenn teno tens tent teon teor teos ter- terc tere terf tern tero terr ters tesc tese teso tess test tete teto tetr tets tett tfec tfot tfrs tfss tftc tncc tnef tnes tnfc tnts toce toco toee toen toer toes toet toff tofo toft tone tonn tono tons toof toon toor toos toot torc tore torf torn toro torr tors tort tosc tose toso toss tost totc tote toto totr tots tott trcc tre- trec tree tref tren treo tres tret trfc trfr trno troc troe tron troo tros trot trst trtc trte trtr tscc tsec tsen tses tset tsfc tsos tsse tssf tssr tsst tstc tsts ttcn tten tteo tter ttfc ttff ttfn ttoe tton ttss tttt