Regarding wrong itc in 3 b. but want to reverse in gstr 9

Namaskar Sir / Madam
                      Sir need your help. Sir  I Have Taken  wrong input tax credit in Gstr 3B in Month of July 2017.Sir not reverse these wrong Itc  in any  monthly return 3B  and in f.y 2017-2018 , 2018-2019, 2019-2020  Sir just wanted to knew that how i will be reverse these wrong itc in Gstr 9 ???

example. 

Itc In  3B in F.Y 2017-2018 = 10000

Wrong itc include in above amount = 2000

Sir these 2000 amount i was forgot to reverse these amount in any f.y 2017-2018,2018-2019,2019-2020. But i want to reverse these amount in Gstr 9 . So please guided me