This is how I hear it ...
intro:
Eb  Gm  Fm7  Bb  (two times)
verse:
Eb  Gm  Fm7  Bb (two times)
Eb  C7   Fm    Bb (two times)
Eb  Gm  Fm7  Bb (two times)
Eb  C7   Fm    Abm 
F7/A      Bb    Eb
(modulate up 1/2 step and repeat)