roor roos root rorc rore rori roro rort rosc rose rosi roso ross rost rotc rote roti roto rotr rots rott rrrr rsbi rscc rscs rsee rsis rsos rsre rsts rtcc rtce rtee rtei rtes rtss rtts s-ib s-ic s-ii s-os sbbs sbcc sbcs sbct sber sbic sbor sbot sbse sbsi sbst sbtc scbi sccc scce sccs scct scec scee scer scet sci- scic scie scio scir scis scit scob scoo scor scot scr- scrc scre scri scrs scsc scsi scso scsr scst sctc scto sctr scts se-c se-e se-i se-o se-s se-t sebe sebi sebo sebs sebt sec- secc sece seco secr secs sect seeb seec seer sees seet seie seii seir seis seit seoc seoi serb serc sere seri sero serr sers sert sesc sese sesi seso sess sest set- setc sete seti seto sets sett sibc sibe sibi sibo sibs sicc sice sici sico sics siec sier sies siit sioe sior sios siot sirc sire siri siro sirr sirs sirt sisc sise sisi siss sist sit- sitc site siti sito sits sitt sobe sobo sobr sobs sobt soce soci soco socr socs soec soeo soes soic soie soir sois soit soor soos soot sorb sore sori soro sorr sors sort sose sosi soso soss sost sotc sote soto sots srbc srcc srct sreb srec sreo sres srib sris sros srtr ssbr sscc ssce ssci sscs ssec ssee sses sset ssis ssit ssoc ssot ssrc ssri ssrs sssb sssc sssi ssss sstb sstc ssts stbc stbs stcc stcs stec stee steo ster stes stet stib stic stie stio stir stis stit stob stoe stoo stor stos stot strc stre stri stro strs stsi stss sttc sttr tbbs tbcb tbcc tbce tbit tbrb tbst tcbs tccc tcos tctc tcts tebo teco tecr tecs tect teec teer tees teet teic teie teir teis teor teos ter- terc tere teri tero terr ters tesc tese teso tess test tete teti teto tetr tets tett tibi tibs ticc tice tico tics tie- tiee tiei tieo tier ties tiet tiit tios tirb tire tiri tiro tirr tirs tisb tise tisi tiso tiss tist titc tite titi tito tits titt tobe tobi tobo tobs tobt toce toci toco toee toei toer toes toet toie tois toit toor toos toot torc tore tori toro torr tors tort tosb tosc tose tosi toso toss tost totc tote toti toto totr tots tott trcc tre- trec tree trei treo tres tret tri- trib tric trie trio tris trit troc troe troi troo tros trot trsi trst trtc trte trtr tsbc tscc tsec tses tset tsis tsob tsoi tsos tsse tssi tssr tsst tstc tsts ttbb tteo tter ttoe ttss tttt