-er eee eef eeo eer eev ef- efe eff efo efr eo- eoe eof eoo eor eou ere erf ero err eru erv eu- eue euf eur euv eve evf evo evr evv fee fef feo fer feu fev ffe fff ffo ffr ffu ffv foe fof foo for fou fre frf fro frr fru fue fuf fuo fur fuu fuv oee oef oeo oer of- ofe off ofo ofr ofu ofv oo- oof ooo oor oov or- ore orf oro orr oru orv ou- oue ouf ouo our ov- ove ovf ovo ovv re- ree ref reo rer reu rev rfe rff rfo rfr rfu rfv roe rof roo ror rou rov rrf rrr rru rue ruf ruo rur ruu ruv rve rvf rvo rvr rvu rvv uee uef uer ufe uff ufo ufr ufu ufv uoe uoo uor ur- ure urf uro urr uru uue uur uuu uve uvf uvo uvu uvv v-e vee vef veo ver veu vff vfr vfu vfv voe vof voo vor vou vov vre vrf vrr vru vue vur vuv vvo vvr vvv

eeee eefe eero efeo efor eore erer erev eroe eroo erre erro erur eruv erve euer eur- eure euro ever evoe evoo evre feer fefe feff fefo feof fere fero ferr feru ferv feve fevr ffee ffff ffrr foer fofo foof for- fore foro forr four fove fr-v free freo froe frou frue fuff fufu fuor fur- fure furo furr o-eo oere oeuf ofer off- offe offo offr offu ofor ofre ooer ooff oooo oore ore- oreo orer orfe orff orfu oro- oroe orof oror orro orve orvr ouer oufe ouff our- oure ouro ouu- ovee over ovo- ovoo ovre reef reev refe reff refr refu reof reou rere rero reru reue reuf reuu reve revo rfef roer roev rofe roff rofo roof roor rore roro roru roue rouf rove rovo rrrr ruer rufe ruff rufo rure ruro ruru ruve ruvu rver ufer uffe uofo uor- uore uovo ure- urfe urff uro- uroo urre urur urve uuuu uver uvvu veer veor ver- vere vero veur veve vevo vfor voer voeu voff vofr voor vor- vore voro voru voue vour vref vreo vver vvvv

eeeee eevee eever efere effer efore efuru eofor eorre erere ereve eroor erore error euro- eurre eveof evere evero everr eveve evoor evour feeor feere fefor feoff ferr- ferre ferro feuer fever fevre foore fore- foreo forro forur forvo fouee foure fouro freer frere freur frevo frore fu-fu fuero furo- furor o-fer ofeve offer offof offre ofour oo-er ooooo oovoo oreo- orere orero orfeo orfeu orfoe orfor oroer oruro ouoro oure- ouver ouvre over- overo reefe reere reeve refer reffe reffo rere- reree reuer rever revue ro-ro roero roffe rofor rooer roofe roore rooue roove rorer rouer roufe roure rover ruere ruffe ruffo rufo- ufere ufofu uouee ureo- urour uuuuu uvrou veere veeve verre verve veuve veveo vever voere voore vooru vorfe vorre voure vuere vuver

e-four effere effoff effore errour eururo evoure feeror feofor ferfer ferrer ferro- ferrur fervor foerre foofoo foofur forrer forure foufou fourer fourof fourou freeof frefre freure froofe frover fufore furfur furore furour furrer furrfu oeuvre oferre oooooo orever orrour ouerre overer reefer reeffe reever refeff reroof reuere reuour reuver revere revver roofer rouffe rouvre rovere ruffer urouer uroure uruffe uuvere veerer veroor verree verrer verrue verver vervo vvvvvv

eeeroer errorof euro-vo eurofor feoffee feoffer feoffor ferrere ferrero ferrour ferrure foo-foo for-rue forever forfere forfree fou-fou freefor furrour furrure off-off offeree offerer offeror orfever orfevre orrouer ourouer overfur overrev refeoff referee referer reoffer rerefer reveree reverer roovere urevere veeroff verrore verrour verveer

everfree feeoffee forereef fourree froufrou overfree overroof overruff referree referrer vorevere vorovoro

errorfree four-four frou-frou rove-over

foreverfor vourvourou