Foot numbers ranges script

Hi all,

I need a solution for foot number for page ranges in every page.

Example:

Orginal

asasada asdasd das dasd asd 1,2,3

------------------------

1. asasas

2. asasasa

3. asasa

Exapectation output

asasada asdasd das dasd asd 1-3

------------------------

1. asasas

2. asasasa

3. asasa

Thanks for advance.

Best,

Baskar