Reverse supplies in gstr 3b

Suppose i have paid 33000 rent to URD deler so i am lible to pay GST on reverse charges. ( 33000 * 18% (9+9 = 5940 (2970+2970) )

I need to put rcm basis expenses and tax on column no. 3.1 (d) & 4A (3) on GSTR 3B ??????

I have paid tax before filling the return so can i  adjust tax which paid for rcm on the time of filling the return ??