sidi sido sidr sids sied sier sies siit siod sioe sior sios siot sire siri siro sirr sirs sirt sisd sise sisi siss sist sit- sitd site siti sito sits sitt sobe sobo sobr sobs sobt sodd sode sodo sods soeo soes soie soir sois soit sood soor soos soot sorb sord sore sori soro sorr sors sort sose sosi soso soss sost sote soto sots srde sreb sreo sres srib sris sros srsd srtr ssbr ssdd ssee sses sset ssid ssis ssit ssot ssri ssrs sssb sssi ssss sstb sstd ssts stbd stbs stds sted stee steo ster stes stet stib stid stie stio stir stis stit stob stod stoe stoo stor stos stot strd stre stri stro strs stsi stss sttd sttr tbbs tbit tbrb tbst tddb tdes tdis tdor tdri tdse tdss tebo tedd tede tedi teds teed teer tees teet teie teir teis teor teos ter- tere teri tero terr ters tesd tese teso tess test tete teti teto tetr tets tett tibi tibs tidd tide tids tie- tied tiee tiei tieo tier ties tiet tiit tios tirb tird tire tiri tiro tirr tirs tisb tise tisi tiso tiss tist tite titi tito tits titt tobe tobi tobo tobs tobt todd tode todi todo tods todt toed toee toei toer toes toet toid toie tois toit tood toor toos toot tord tore tori toro torr tors tort tosb tose tosi toso toss tost totd tote toti toto totr tots tott tre- tred tree trei treo tres tret tri- trib trie trio tris trit trod troe troi troo tros trot trsd trsi trst trte trtr tsbd tsdb tses tset tsid tsis tsob tsoi tsos tsse tssi tssr tsst tsts ttbb tteo tter ttoe ttss tttt