Answering that would take too much effort.
effect
affect
offers
offing
effuse
Tactic.
Some six letter words with the second letter R and the third letter I are:arisesbribedbridalbridgebridlebrightcringecrisiscrispycriticdrippydriveldriverfridgefriendfrightfrigidfrillyfringefriskyfrizzygrievegrillegrinchgrittyorientoriginoriolepriestprimalprimerprinceprisonprivettribaltrickytrifletripletripodtrivettriviaurinalwriterwrithe
Better
Some words with the same second and third letter:DOUBLE A:LaagerDOUBLE E:BeefedBeepedBeeperBeetleDeejayDeemedDeepenDeeperDeeplyFeebleFeeblyFeederFeelerGeezerHeededHeeledJeeredKeeledKeenedKeenerKeenlyKeeperLeeredLeewayMeekerMeeklyMeeterNeededNeedlePeekedPeeledPeelerPeepedPeeperReefedReeledSeededSeederSeekerSeemedSeemlySeepedSeetheTeemedTeeterTeetheVeeredWeededWeederWeeklyWeenedWeenieWeeperWeevilDOUBLE O:BoodleBoogerBoogieBooingBookedBookerBoomedBoomerBoostsBootedBoothsBoozedBoozerBoozesCoocooCooingCookedCookerCookieCooledCoolerCoopedCooperCootieDoodleDoomedFoodieFooledFootedFooterFootieGoodlyGoofedHoodedHoofedHookahHookedHookerHookupHoopedHooperHooplaHoorahHoorayHootedHooterHoovesLoofahLookedLookerLoomedLooneyLoopedLoosenLooserLootedLooterMooingMoonedMooredMootedNoodleNoosesPoodlePooledPoorerRoostsRootedSoonerSootheTooledTootedToothyVoodooWoodedWoodenWoodsyWoofedWooferWooingWoolenWoollyZoomed
Morsel
faster
bakerybikingbakinghikingjokinglikingmakingpokingrakingtakingwaking
physic
billet billet
Cougar
Skiing
Some six letter words with the second letter U are:auburnaugustauricleauroraauthorautismautumnbucketbucklebudgetbuffetbufferbulletbumblebumperbundlebunglebunkerburgleburgerbutanebutlerbutterbuttoncubismcuckoocuddlecudgelcupolacurfewcurlercursorcurtsycustomcutletcutoffcutterdugoutdulcetduplexdustereulogyeunucheurekafumblefungusfunnelfurrowfusionfutilefutureguitarguiltygulletgunnergurglegussetgutterguzzlehuddlehumblehungerhunterhustlejumblejunglejunkiekuchenlumbermuddlemumblemuttermutualnudistnuggetoustedoutfitoutrunpuddlepulleypunnetpusherputterquaintqueasyrubberruggedrusticsubtlesubmitsucklesullensupplesurreytumbleturkeyturrettussleturtlevulgar