scsd scsl scso scsr scst sctc sctd sctl scto sctr scts sdcc sdco sddc sdds sdef sder sdes sdet sdfc sdlc sdls sdlt sdot sdrc sdrs sdsc sdsf sdsl sdss se-c se-d se-e se-f se-k se-o se-s se-t sec- secc secd sece seck seco secr secs sect sede sedo seds seec seed seef seek seel seer sees seet seff sefl seft seke sekk seko sekt seld sele self selk sell selo sels selt seoc seod seok seol serc serd sere serf serk sero serr sers sert sesc sese seso sess sest set- setc sete setf setl seto sets sett sfcc sfco sfcs sfdc sfdk sfer sffc sflc sfls sfor sfos sfrc sfro sfss sfts sked skee skel skeo sker skes sket skfc skoe skol skor skot skrt sksd skss slcc slcd slds sled slee sler sles slet slft sloc slod sloe sloo slos slot slrc slre slrs slsc slst slts soce sock socl soco socr socs sodd sode sodo sods soec soel soeo soes sofo soft soke sokk soko sold sole solf solk soll solo solr sols solt sood soof sook sool soor soos soot sord sore soro sorr sors sort sose soso soss sost sotc sote sotk sotl soto sots srcc srct srde srec sreo sres srfc sros srsd srtr sscc ssce sscs ssdc ssdd ssdf ssec ssee sses sset ssfc ssfl sslc ssle sslt ssoc ssot ssrc ssrl ssrs sssc sssf ssss sstc sstd sstl ssts stcc stcs stds stec sted stee stef stek stel steo ster stes stet stfc stks stlc stld stle stlo stlt stod stoe stof stok stol stoo stor stos stot strc strd stre strk stro strs stsf stss sttc sttd sttr tccc tcdd tcfc tcos tctc tcts tdes tdff tdkr tdls tdor tdse tdss teck tecl teco tecr tecs tect tedd tede tedk teds teec teed teef teek teel teer tees teet tefc teff tefl teft teke tel- telc teld tele tell telo tels telt teok teor teos ter- terc tere terf terk tero terr ters tesc tesd tese tesl teso tess test tete teto tetr tets tett tfdc tfec tfot tfrs tfsd tfss tftc tkod tkof tkol tkos tkts tlco tldr tlos tlrs toce tock toco todd tode todo tods todt toed toee toek toer toes toet toff tofo toft toke toko tol- told tole tolk toll tolo tolt tood toof took tool toor toos toot torc tord tore torf tork toro torr tors tort tosc tose tosk toso toss tost totc totd tote toto totr tots tott trcc trcl tre- trec tred tree tref trek treo tres tret trfc trfd trfr troc trod troe troo tros trot trsd trst trtc trte trtr tscc tsec tses tset tsfc tsfl tsks tsol tsos tsse tssf tssr tsst tstc tsts tteo tter ttfc ttff ttoe ttss tttt