-er eee eef eel eer ef- efe eff efl efr ele elf ell elr elu ere erf erl err eru eu- eue euf eul eur fee fef fel fer feu ffe fff ffl ffr ffu fle flf fll flr flu fre frf frl frr fru fue fuf ful fur fuu lee lef lel ler leu lfe lff lfl lfr lfu lle llf lll llr llu lrf lrr lru lue luf lul lur luu re- ree ref rel rer reu rfe rff rfl rfr rfu rle rlf rll rlr rlu rrf rrl rrr rru rue ruf rur ruu uee uef uel uer ufe uff ufl ufr ufu ule ulf ull ulr ulu ur- ure urf url urr uru uue uur uuu

eeee eefe eefl eele elee elef eler elfe elle ellu elue elul erel erer erle erll erre erur euer eule eur- eure feel feer fefe feff fele felf fell fere ferr feru ffee ffff ffrr flee fler flue fluf flur free frue fuel fuff fufu fule full fulu fur- fure furl furr le-u leef leel leer lefe leff lele lell lelu lere leur llef lleu llll lrrr luef luer lufe luff lufu lule lull lulu lure reef reel refe reff refl refr refu rele rell rere reru reue reuf reul reuu rfef rffl rlee rlef rleu rrle rrrr ruel ruer rufe ruff rule rull rure ruru uele uell ufel ufer uffe ulee ulfe ulle ullr ulul ure- urfe urff urle urre urur uulu uuuu

eeeee eeler efere effer efuru elele ellel eller ellul elulu eluru erere euell euler eurel eurre feele feere felle ferel ferle ferr- ferre feuer feule fleer flere fleur fluff flure flurr freel freer frere freur fu-fu fulle fullf furel leell leere lefeu leffe leful leleu lelle lerer lufre lulle lulul lurer lurue reefe reere refel refer reffe relee relue rere- reree reuel reuer reule ruele ruell ruere ruffe ruler ruule uelfe ufere ullur ululu uluru urelu uuuuu

eeuler efeler effere eleele euller feeler feller ferfel ferfer ferrel ferrer ferrur ferule fleure flurre freele frefre freure fueler fuffle fuller furfur furler furrer furrfu leeful leelee leerer leffel lefull luffer lufful luller lurulu reefer reeffe reeler reeuel refeel refeff refell reflee reflue refuel refurl releef reller relleu rereel rerule reuele reuere reuler reulle rueful ruelle ruffer ruffle ruller uruffe

felfree ferrell ferrere ferrule ferrure feruler fleerer fluffer fueller furrure leffler lefulle lleufer lureful referee referer releefe rerefer ruffler

feelfree fellerer freefell referree referrer refueler

fllllllll refueller