Muse - Execution Commentary Chords & Tabs

Main riff
e|-----------------------------|
B|-----------------------------|
G|-----------------------------|
D|-----------------------------|
A|-----------------------------|
D|-0-2-0-3-3-0-0-5-0-6--7-7-7--|
[ Tab from: https://www.guitartabs.cc/tabs/m/muse/execution_commentary_tab.html ]
Second riff
e|------------------------------------------------|
B|------------------------------------------------|
G|-----------------------------?-?--?---?---?-?---|
D|-----------------------------?-?--?---?---?-?---|
A|-----------------------------?-?--?---?---?-?---|
D|-0-2-0-3-0--5-3---0-2-0-3-0--?-?--?---?---?-?---|

The ? are improvised, i dont know what Matt plays, but i just strum like first 5's then 
then 7's...