-ous ffff ffrr ffss fftf floo flor flos flot flou flts fluf fluo flur flus fofo foll folo folr fols folt foof fool foos foot for- forl foro forr fors fort foso foss fost foto fots fott foul four fous fout frol fros frot frou frso frst fsfo fssf ft-l ftos ftrs ftsr fuff fufu full fuls fulu fuor fur- furl furo furr furs furt fuso fuss fust fusu futo futs futu lfts llll lloo loff loft loll lolo lols loof lool loor loos loot loro lors loso loss lost lotl loto lotr lots lott loul lour lous lout louu lrrr lrst lrts ls-r lsof lsso lssr lsts ltrs ltsr lttr luff luft lufu lull lulu lurs lurt luso luss lust luts off- offo offr offs offu ofor ofst ofus olfs ollo olof olor olos olot olst oltu olur ooff oofs oolo oooo ooos oort oost oots oous orff orfs orfu orlo orlu oro- orof oror oros orot orro orrs orso orsu orto orts orus oslo osoo osor osos osro osso ossu ostr osts osul oto- otof otoo otor otos otro otrs otso otsu otto otts ottu otur otus ouff ouls oulu our- ouro ours ourt oust out- outo outs ouu- rffl rlls roff rofl rofo rolf roll rolo rolt roof rool roor roos root roro rort roru roso ross rost rotl roto rotr rots rott rouf roul rous rout rrrr rsos rssl rsts rstu rtls rtlt rtss rtts ruff rufo ruft rull rulo ruro rurs ruru ruso russ rust rusu rutl ruto ruts rutt rutu s-os sfls sfor sfos sfro sfss sfsu sfts slft sloo slos slot slrs slst slsu slts slur slut sofo soft solf soll solo solr sols solt soof sool soor soos soot soro sorr sors sort soru soso soss sost sotl soto sots sotu souf soul sour sous sout sros srtr ssfl sslt ssot ssrl ssrs sssf ssss sstl ssts stfu stlo stlt stof stol stoo stor stos stot stou stro strs stru stsf stss sttr stuf stul stur stus stut suf- suff sufr sufs sufu sul- sulf sull sulo sult sulu suor suos sur- surf suro surr surs surt suru sus- suso suss sust susu suto sutu suus tfot tfrs tfss tlos tlrs toff tofo toft tofu tol- toll tolo tolt tolu toof tool toor toos toot torf toro torr tors tort toru toso toss tost tosu toto totr tots tott toul tour tous tout trfr troo tros trot trou trst trtr trus trut truu tsfl tsol tsos tsou tssf tssr tsst tsts ttff ttss tttt ttul tuff tufo tuft tufu tull tulo tulu tuor tuos turf turo turr turs turt turu tuss tust tutl tuto tuts tutt tutu tuuo ufos ulft ullo ullr ulo- ulos ulto ults ultt ulul ulus uofl uofo uor- urff urft urls uro- urol uroo urso urss ursu urts urur urus urut usfl usfs uslu usos ussf ussr usss usst ussu usto usts usul usus utfo utor utsl utto uttu uulu uutf uuuu