Filename regex rearranging

Hi, I have a bunch of songs having featuring artists (feat., ft., feat, ft) but I want to change the place of these featuring artists on the filename by putting them at the end of the filename.

Lets say the name of the song is:
Pink Feat. John Legend - Don't Give Up

What expression can I use so it will be rewritten the following way:
Pink - Don't Give Up Feat. John Legend

Thanks in advance

Action: Format Value
Field: _FILENAME
Formatstring: $regexp(%_filename%,(.) (featuring|Featuring|FEATURING|ft|Ft|FT|feat|Feat|FEAT)(. | )(.) - (.*),$1 - $5 $2$3$4)

If you want to change the feat inside you tag fields, look here:
/t/11096/1
or here (German):
/t/11291/1