Good Riddance - Green Day

This picking in this tab is pretty accurate

Standard Tuning

Chords - G5 - 300033 C5 - x30033 D - x00232 Em9 - 022033
you can just strum the chords in rhythm, it makes same sound
    G5         G5           C5           D
e------------------------------------------------------
b-----3------------3------------3-------------3--------
g-------0---0--------0---0----0---0---0-----2---3---2--
d---0-----0------0-----0------------------0-------0----
a---------------------------3-------3------------------
e-3------------3---------------------------------------
after 2 times, starts singing
the picking for Em9
e----------------------------------
b------3----------------3----------
g----0---0---0--or--------0---0----
d----------2----------2-----2------
a--2----------------2--------------
e---------------------------------- whichever one sounds better to you

those are the right progressions, im just not sure of order after he sings