Answer :
In the picture above. I hope it helps:)
I started at 2 but for the one bracket just know that
1×1=1
1×2=2
1×3=3
1×4=4
1×5=5
1×6=6
1×7=7
1×8=8
1×9=9
1×10=10
1×11=11
1×12=12
