Some four letter words with second letter U and fourth letter O are:autoeurojudokudoouzo
The words with the form _L_O are also, alto, and oleo/olio.
No answer yet, but it probably ends with "ing"
Some five letter words with second letter R and fourth letter W are:brawlbrawnbrowncrawlcrowdcrowndrawldrawndrownfrowngrowlgrownprawnprowltrawl
Some six letter words with second letter U and fourth letter K are:bucketbucklebunkercuckooduckedduckiehunkerhuskedjunkedjunkerjunketluckedlurkedmuckedmusketmuskoxpuckerpunkedquakesruckussuckersulkedsunkentuckedturkey
Some four letter words with second letter U and fourth letter O are:autoeurojudokudoouzo
The words with the form _L_O are also, alto, and oleo/olio.
ninja
No answer yet, but it probably ends with "ing"
Some five letter words with second letter R and fourth letter W are:brawlbrawnbrowncrawlcrowdcrowndrawldrawndrownfrowngrowlgrownprawnprowltrawl
Some six letter words with second letter U and fourth letter K are:bucketbucklebunkercuckooduckedduckiehunkerhuskedjunkedjunkerjunketluckedlurkedmuckedmusketmuskoxpuckerpunkedquakesruckussuckersulkedsunkentuckedturkey
Some five letter words with second letter O and fourth letter E are:bogeybowelbowercometcovencoverdowelhotellosermodelmowernoseynovelpowerrover
vowel
Some five letter words with the second and fourth letter A are:cabalcacaoJapanMayannasalradarsalad
Five letter words with the second and fourth letter O are:boronbosomcocoacoloncolordonorhonormoronmotorrobotrotor
calf is one barf another
unto, undo, updo