The basic chord progression of this song is
D Emin G Emin
eg.
[ Tab from: https://www.guitartabs.cc/tabs/a/alanis_morissette/ironic_crd.html ]
D Emin G Emin
An old man turned ninety-eight
he won the lottery and died the next day
It's a black fly in your chardonnay
It's a death row pardon two minutes too late
And isn't it Ironic, don't you think?
CHORUS:
D Emin G Emin
It's like rain on your wedding day
It's a free ride when you've already paid
It's the good advice that you just didn't take
Amin Emin G
And who would have thought it figures'
Pretty simple, huh?
Rocksta Wannabe