Here's the verse riff.
E5 G5
Eb -------------------|--
Bb -------------------|--
Gb -------------------|--
Db -----2--------5----|--
Ab -----2--------5----|--
Eb -0-----0--3-3---0--|--
The chorus is just the same chords, except open.
nirvana
Dumb
[ Tab from: https://www.guitartabs.cc/tabs/n/nirvana/dumb_tab_ver_4.html ]
Verse:
E G
Eb ---0---3--|-
Bb ---0---3--|-
Gb ---1---0--|-
Db ---2---0--|-
Ab ---2---2--|-
Eb ---0---3--|-
On the second chorus this bridge appears, the last time strum C once.
B C
Eb ---2-2-2-2-2\3-3-3-3-3--|-
Bb ---4-4-4-4-4\5-5-5-5-5--|-
Gb ---4-4-4-4-4\5-5-5-5-5--|-
Db ---4-4-4-4-4\5-5-5-5-5--|-
Ab ---2-2-2-2-2\3-3-3-3-3--|-
Eb ------------------------|-
That's it.
