Sublime - Zimbabwe Acoustic Chords & Tabs

Ok then... well this is my first tab and I felt I had to do this because there are no 
tabs for this song.....

Here's how I believe its played.....
I'm 99% sure this is correct...
I've played along with the song many times and it fits pretty well


I could not for the life of me find the name of the fourth chord listed
If you know help me out here

A:       577655
Ab:     466544
C#m: 446654
???:   244322
Bb:     799877


Well anyways the strumming I'll try to explain this
(its better to listen to the song)
is a downstroke,tap the strings,downstroke,upstroke

Listen to the song to figure out the small details like where he plucks the strings on 
A's and such....etc..etc...


Intro: A, Ab, C#m, A, Ab, ???, C#m, A
[ Tab from: https://www.guitartabs.cc/tabs/s/sublime/zimbabwe_acoustic_crd.html ]
 Ab                           ???          C#m                   A
Every mans gotta right to decide his own destiny
	Ab                    ???             C#m             A
And in this judgement there is  no partiality
Ab                    ???                C#m                  A
And soon we'll find out who is  the real revolutionary
 Ab                                ???              C#m                 A
And I don't want my people to be tricked by mercenaries
                                            Ab
Brother  you're right, you're right, You're right,
     ???   C#m              A                      Ab
you're right, you're sooo right  We gonna fight,
                 ???                         C#m      A
we'll have to fight, We'll have to fight, fighting for a rights
  A                               Bb
Natty Dread in a  Zimbabwe
  A                     Bb
Set it up in Zimbabwe
  A                            Bb
I and I a liberate Zimbabwe
  A                            Bb
I and I a liberate Zimbabwe

Ab        ???    C#m            A
No more internal  power struggle
Ab                    ???             C#m                   A
We come together to overcome the little struggle
 Ab                    ???                C#m                  A
And soon we'll find out who is  the real revolutionary
 Ab                       ???           C#m          A
And I don't want my people to be  contrary
                                           Ab
Brother you're right, you're right, You're right,
    ???    C#m              A                      Ab                          ???
you're right, you're sooo right  We gonna fight, we're gonna fight,
           C#m              A
We'll have to fight, fighting for a rights

  A                               Bb
Natty Dread in a  Zimbabwe
  A                     Bb
Set it up in Zimbabwe
  A                            Bb
I and I a liberate Zimbabwe
  A                            Bb
I and I a liberate Zimbabwe
  A                            Bb
I and I a liberate Zimbabwe
  A                            Bb
I and I a liberate Zimbabweeeee......



Sorry about the "???" but I have no clue what its called
If you could understand this tab then you can probably play the song then


I hope this helped out