in major

I7 – I7 – I7 – I7 – IV7 – IV7 – I7 – I7 – V7 – IV7 – I7 – V7: B♭7 → B♭7 → B♭7 → B♭7 → E♭7 → E♭7 → B♭7 → B♭7 → F7 → E♭7 → B♭7 → F7