Hullo. This tab to me is 95% accurate...
hope you agree with me..
It's a pretty easy song to play, so
good luck
Tuning:Tune the lower E string to Drop D
Intro
/-----------------------------------------------------------------\
Guitar 1 ||
E|----------------------------------------------------------------||
B|----------------------------------------------------------------||
G|-----4-----------3-6xx-------4-----------4-6--------------------||
D|-1---4--4--1-1---3-6xx-1-1---4--4--1-1---4-6--1--1-1------------||
A|-1---2--4--1-1---1-4xx-1-1---2--4--1-1---2-4--1--1-1------------||
D|-1------4--1-1---------1-1------4--1-1--------1--1-1------------||
three times after
/-----------------\/-----------------\
Guitar 2 x3 ||Guitar 1 ||
E|----------------||E|---------------||
B|----------------||B|---------------||
G|----------------||G|-4-------------||
D|----4-----------||D|-4--4--1-1-----||
A|-------5-4-2----||A|-2--4--1-1-----||
D|-8-8------------||D|----4--1-1-----||
three times - a1 same time - listen to strum pattern
/-----------------\/---------------------------------\
Guitar 2 x3 ||Guitar 1 ||
E|----------------||E|-------------------------------||
B|----------------||B|-------------------------------||
G|----------------||G|--------------333-6666---------||
D|----4-----------||D|1-1----1-1----333-6666---------||
A|-------5-4-2----||A|1-1----1-1----111-4444---------||
D|-8-8------------||D|1-1----1-1---------------------||
three times same time
/-----------------\/----------------------------------\
Guitar 2 x3 ||Guitar 1 ||
E|----------------||E|--------------------------------||
B|----------------||B|--------------------------------||
G|----------------||G|------4-----3----333-6666-------||
D|----4-----------||D|-1----4--0--3----333-6666-------||
A|-------5-4-2----||A|-1----2--0--1----111-4444-------||
D|-8-8------------||D|-1-------0----------------------||
three times same time
/-----------------\/----------------------------------\
Guitar 2 x3 ||Guitar 1 ||
E|----------------||E|--------------------------------||
B|----------------||B|--------------------------------||
G|----------------||G|-1----4-----3----333-6666-------||
D|----4-----------||D|-1----4--0--3----333-6666-------||
A|-------5-4-2----||A|-1----2--0--1----111-4444-------||
D|-8-8------------||D|---------0----------------------||
seven times - v1 two times - join v1 after 4th time played
/-------------------------\/--------------------------------------\
Guitar 2 x7 PM ||Guitar 1 x2 ||
E|------------------------||E|----------44-66-44----44------------||
B|------------------------||B|-44-66-77----------77---------------||
G|------------------------||G|------------------------------------||
D|------------------------||D|------------------------------------||
A|-111--5-3-2-2-111-7-6---||A|------------------------------------||
D|-111----------111----10-||D|------------------------------------||
/---------------------------------\
Guitar 2 - Pre-Chorus ||
E|--------------------------------||
B|--------------------------------||
G|--------------------------------||
D|-4--6666-7777-------------------||
A|-4--6666-7777-------------------||
D|-4--6666-7777-------------------||
two times
/-------------------------------------------------\
Guitar 1 - Chorus x2 ||
E|------------------------------------------------||
B|------------------------------------------------||
G|-4444------66666666-4444------6666-8888---------||
D|-4444-4444-66666666-4444-4444-6666-8888---------||
A|-2222-4444-44444444-2222-4444-4444-6666---------||
D|------4444---------------4444-------------------||
[ Tab from: https://www.guitartabs.cc/tabs/s/sum_41/no_reason_tab_ver_3.html ]
/---------------------------------\
Guitar 2 - After Chorus ||
E|--------------------------------||
B|--------------------------------||
G|--------------------------------||
D|--------------------------------||
A|--------------------------------||
D|-7-9--10-8-7-7--6-8-9-8-6-5-----||
seven times - v1 two times - join v1 after 4th time played
/-------------------------\/--------------------------------------\
Guitar 2 x7 PM ||Guitar 1 x2 ||
E|------------------------||E|----------44-66-44----44------------||
B|------------------------||B|-44-66-77----------77---------------||
G|------------------------||G|------------------------------------||
D|------------------------||D|------------------------------------||
A|-111--5-3-2-2-111-7-6---||A|------------------------------------||
D|-111----------111----10-||D|------------------------------------||
/---------------------------------\
Guitar 2 - Pre-Chorus ||
E|--------------------------------||
B|--------------------------------||
G|--------------------------------||
D|-4--6666-7777-------------------||
A|-4--6666-7777-------------------||
D|-4--6666-7777-------------------||
two times
/-------------------------------------------------\
Guitar 1 - Chorus x2 ||
E|------------------------------------------------||
B|------------------------------------------------||
G|-4444------66666666-4444------6666-8888---------||
D|-4444-4444-66666666-4444-4444-6666-8888---------||
A|-2222-4444-44444444-2222-4444-4444-6666---------||
D|------4444---------------4444-------------------||
/---------------------------------\
Guitar 2 - After Chorus x2 ||
E|--------------------------------||
B|--------------------------------||
G|-8-6-4-----6---6----------------||
D|-8-6-4-4-8-6-8-6----------------||
A|-6-4-2-4-8-4-8-4----------------||
D|-------4-8---8------------------||
three times after
/-----------------\/-----------------\
Guitar 2 x3 ||Guitar 1 ||
E|----------------||E|---------------||
B|----------------||B|---------------||
G|----------------||G|-4-------------||
D|----4-----------||D|-4--4--1-1-----||
A|-------5-4-2----||A|-2--4--1-1-----||
D|-8-8------------||D|----4--1-1-----||
three times - a1 same time - listen to strum pattern
/-----------------\/---------------------------------\
Guitar 2 x3 ||Guitar 1 ||
E|----------------||E|-------------------------------||
B|----------------||B|-------------------------------||
G|----------------||G|--------------333-6666---------||
D|----4-----------||D|1-1----1-1----333-6666---------||
A|-------5-4-2----||A|1-1----1-1----111-4444---------||
D|-8-8------------||D|1-1----1-1---------------------||
/-----------------------------------------------------------------\
Guitar 1 - Breakdown - b1 ||
E|----------------------------------------------------------------||
B|----------------------------------------------------------------||
G|------4----------3--6-------4----------3--6-66666666------------||
D|-1----4--4--1----3--6--1----4--4--1----3--6-66666666------------||
A|-1----2--4--1----1--4--1----2--4--1----1--4-44444444------------||
D|-1-------4--1----------1-------4--1-----------------------------||
seven times - with b1 - I thought I heard this in with the
/-----------------\ breakdown, but I might be wrong.
Guitar 2 x7 || Just play what you think is there.
E|----------------||
B|----------------||
G|----------------||
D|----4-----------||
A|-------5-4-2----||
D|-8-8------------||
four times
/-------------------------------------------------\
Guitar 1 - Chorus x4 ||
E|------------------------------------------------||
B|------------------------------------------------||
G|-4444------66666666-4444------6666-8888---------||
D|-4444-4444-66666666-4444-4444-6666-8888---------||
A|-2222-4444-44444444-2222-4444-4444-6666---------||
D|------4444---------------4444-------------------||
/----------------------\
Guitar 2 - Outro ||
E|---------------------||
B|---------------------||
G|---------------------||
D|-1-1--1-1--1-1-------||
A|-1-1--1-1--1-1-------||
D|-1-1--1-1--1-1-------||
-Thats it! Enjoy