I have been trying to analyze the bridge of As Time Goes By (Herman Hupfeld). My version is in Eb. The first six chords of the bridge are: AbM7 / C7 / F- / A dim / C- Ab7 / F7 /. Measures 2 to 6 of this progression are puzzling me (i.e. their relationship to each other). Some suggestions on what’s happening in this progression would help. Thanks.