2x 1 x 3 x 21

2x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 21
2x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 21
2x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 212x 1 x 3 x 21