Intro: (play slowly)
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    F#m7     F#m6/B     D7/A       F#7sus4/Ab
(the bass note starts on F#, then as it goes to F#m6/B it first hits A then B, then drops to A
during the D7 chord, then drops another half note to ground the F#7sus4,
on the second pass, the D7 is grounded in a higher D bass and drops a half
note to C#)
Verse 1:
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F#m7              F#m6/B         D7/A            F#7sus4/Ab
       Over their heads, I find a place to crawl away.
F#m7           F#m6/B            D7/D            F#7sus4/C#
       So many times, I hear the things they use to say.
Ab        C#11/C#  (with added "schwowwom" effect- thnx Frederic Maquet)
Verse 2: (same chords as verse 1)
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Into the night, the conversation fades away.
Losing the drift, of all the things I have to say.
Ab         C#11/C#
(I play the C#11 chord with these notes: B C# Eb F# Ab rooted over a C#)
Chorus:
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F#2              A6
https://www.coveralia.com/acordes/it-s-not-me-supergrass.php
It's not me, no, no, not me.
    F#2               Asus2/D
But I don't know what is.
F#2             A6
I try and find my piece of mind.
    F#2            Asus2/D
But I know what I'll miss.
(F#2 just add a Ab to the major chord, Asus2 can be played as DEAB/D)
Bridge:
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         Ab                            C#11/C#
Now it's gone. Now it's gone. Now it's gone.
F#2         A6           Ab          C#11/C#
As everyone listens,   my head turns away.
F#2             A6              Ab         C#11/C#
I know what I'm missing.    But nothing is saaaaid
Chorus (x2)
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  F#2               F#7sus4
But I know what I'll miss
Quick succession:
/    /  / /  /   /  /  /  /  /(hold)
B       B F# B   B  F# B  F# F#....