Some words with the same second and third letter:
DOUBLE A:
DOUBLE E:
DOUBLE O:
dividing
reversed
benefitsfanaticalfinishedgeneralsgenerategeneroushonoraryminicampmonogamymonogrammonoxidemonorailrenegaderenewalssinistertenementvenerate
array
Some seven letter words with the second letter A and the third letter U are:bauxitecausticcautiondauphinhaughtyhauntedhauteurlaundrymaudlinnaughtypaunchyraucousraunchysauntersausagevaulted
boxtops
dividing
reversed
benefitsfanaticalfinishedgeneralsgenerategeneroushonoraryminicampmonogamymonogrammonoxidemonorailrenegaderenewalssinistertenementvenerate
array
There are two such words: irresponsibility and apprehensiveness
Some seven letter words with the second letter A and the third letter U are:bauxitecausticcautiondauphinhaughtyhauntedhauteurlaundrymaudlinnaughtypaunchyraucousraunchysauntersausagevaulted
Some six letter words with the second letter R and the third letter I are:arisesbribedbridalbridgebridlebrightcringecrisiscrispycriticdrippydriveldriverfridgefriendfrightfrigidfrillyfringefriskyfrizzygrievegrillegrinchgrittyorientoriginoriolepriestprimalprimerprinceprisonprivettribaltrickytrifletripletripodtrivettriviaurinalwriterwrithe
deuce, feuds
A five letter word with the second letter U, third letter C, ending with S is MUCUS.
Some five letter words with O and M as the second and third letter are:combocometcommacomicdomedhomerhomeymommynomadoomphromanromeorompervomitwomanwomen
Tactic.