ffff ffrr fftf fftw floo flor flot flou flow fluf fluo flur fofo foll folo folr folt foof fool foot for- forl foro forr fort foto fott fotw foul four fout fowl frol frot frou frow ft-l fttw ftwo fuff fufu full fulu fuor fur- furl furo furr furt futo futu llll lloo loff loft loll lolo loof lool loor loot loro lotl loto lotr lott loul lour lout louu louw lowl lowr lowt lowu loww lrrr lttr luff luft lufu lull lulu lurt luwo luwr luwu lwoo lwow off- offo offr offu ofor ollo olof olor olot oltu olur ooff oolo oooo oort ootw orff orfu orlo orlu oro- orof oror orot orro orto orwo oto- otof otoo otor otow otro otto ottu otur otwo ouff oulu our- ouro ourt out- outo ouu- owlt owow owt- owtt owul owur rffl roff rofl rofo rolf roll rolo rolt roof rool roor root roro rort roru rotl roto rotr rott rouf roul rout rowf rowl rowr rowt roww rrrr rtlt ruff rufo ruft rull rulo ruro ruru rutl ruto rutt rutu tfot toff tofo toft tofu tol- toll tolo tolt tolu toof tool toor toot torf toro torr tort toru toto totr tott toul tour tout towl trfr troo trot trou trow trtr trut truu ttff tttt ttul tuff tufo tuft tufu tull tulo tulu tuor turf turo turr turt turu tutl tuto tutt tutu tuuo two- twof twol twoo twot ulft ullo ullr ulo- ulow ulto ultt ulul uofl uofo uofw uor- urff urft uro- urol uroo urur urut utfo utor utto uttu utwo uulu uutf uuuu wfff wflf wfll wflo wflr wflt wflw wfor wfot wfrf wfrl wfro wfru wfrw wftf wftl wftr wftu wftw wful wfur wfwl wfwo wlff wlfl wlfr wlfw wllf wlll wllr wllt wllw wlof wlol wloo wlor wlou wlro wlrr wlrt wlrw wltf wltl wlto wltr wltt wltu wltw wlur wluw wlwf wlwl wlwt woff wofl wofr woft wolf woll wolr wolt wolw woof wool woot woow worf worl woro worr wort worw wotl wotr wott wotw wouf woul wour wout wouw wowf wowl wowo wowt woww wrff wrfl wrft wrfu wrfw wrlf wrll wrlr wrlt wrlu wrol wroo wrot wrow wrrl wrro wrrw wrto wrtr wrtu wrtw wruf wrul wrwr wtlf wtlo wtlr wtlu wtlw wtof wtol wtor wtot wtou wtow wtro wtrt wtru wtrw wttf wttl wtto wttr wttt wttu wttw wtuf wtul wtwf wtwo wtwr wtwt wtww wuff wufl wufo wufr wuft wulf wull wulr wult wulu wuot wur- wurl wurt wutf wutr wutu wuuf wuuu wuwf wwfl wwfr wwfw wwlf wwll wwlr wwlu wwlw wwof wwol wwor wwot wwow wwrf wwrl wwrr wwru wwrw wwtf wwtr wwtw wwuf wwwl wwwr wwww