Duplicate Jokers

The following jokers are the duplicates in my collection.
joker
joker1b
joker
joker29a
joker
joker2c
joker
joker2d
joker
joker3a
joker
joker3d
joker
joker3e
joker
joker4d
joker
joker6a
joker
joker6b
joker
joker6c
joker
joker7a
joker
joker7d
joker
joker8b
joker
joker8d
joker
joker29b
joker
joker29d
joker
joker9d
joker
joker12a
joker
joker12b
joker
joker12d
joker
joker29f
joker
joker30d
joker
joker30f
joker
joker13c
joker
joker14b
joker
joker14c
joker
joker14e
joker
joker31a
joker
joker31d
joker
joker16a
joker
joker16e
joker
joker17a
joker
joker31f
joker
joker17c
joker
joker17d
joker
joker20a
joker
joker32e
joker
joker4c
joker
joker20d
joker
joker22a
joker
joker9b
joker
joker24e
joker
joker26g
joker
joker14a
joker
joker18c
joker
joker21f
joker
joker22d