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9. Unfold the previous step.
10. Fold the bottom left corner diagonally up to the top right corner.
11. Unfold the previous step.
12. Bring the left and right edges forwards and down.
13. Flatten the paper into a triangle shape. This is an origami water bomb base.
14. Fold the front layers of the left and right lower points up to the top point.
15. Bring the top right flap down to the bottom edge and make a small crease to mark the center.
16. Bring the flap back to the top.