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9. Unfold the previous step.
10. Fold the bottom left corner diagonally up to top right corner.
11. Unfold the previous step.
12. Bring the left and right edges towards you and downwards.
13. Flatten the paper into a triangle, this is now an origami water bomb base.
14. Fold both the bottom left and right points up to the top point.
15. Bring the top right flap down to the bottom center and make a small crease.
16. Take the flap back up to the top.