STUMPERS CCCLXXXIX

Can you think of a common five-letter word such that the first two letters - - - the second, third, and fourth letters - - - the third and fourth letters - - - and the last three letters are all pronouns?

 _   _  _  _  _ 

1   2   3  4  5

1 2 = _ _

2 3 4 = _ _ _

3 4 = _ _

3 4 5 = _ _ _

Answer:

 

The word is USHER:

 

1 2 = US

2 3 4 = SHE

3 4 = HE

3 4 5  = HER