Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to nollie [title] Get some momentum going. [step] Doing a nollie straight up without moving is much harder than doing it after you've got some speed going. This will help you gather the momentum you need to pop up, and will give you height and control over your board.

Ending1: For this tutorial, you'll need to use your momentum to actually move the board up at all. [substeps] Have a few push-ups against the wall, then make sure there's plenty of room between your body and the wall. Ending2: Take a running start before you get on your board to pick up the speed. [title] Place your front foot up on the nose of the board. Ending3: [substeps] This is also called a " belly wheelie. " [title] As you approach the tail of your board and reach out for it, you may hear a loud' oomph' sound. Ending4: [title] Put your two feet on the board. [step] This is also called " your putting leg ".

Answer format: ending1/ending2/ending3/ending4