Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to hardflip [title] Get up some speed. [step] Push a few times and gain a little speed to start, because this trick requires a bit of momentum to pull off. [title] Put your back foot in position.

Ending1: [step] Once you've got a feel for the flip and have mastered it, put your back foot in position on the ground-right in the center of the screen, with your toes and your arms up below you. [title] Pop your " first " foot up into the air. Ending2: [step] The ball of your back foot should be placed close to the middle of your board, in the same position you use for a kickflip. You should be slightly up on the ball of your foot. Ending3: [step] In this position, it will be difficult to move at the end of the trick. Therefore, it is best that you take into account all the people around you as you move backwards. Ending4: [step] Lean forward as far as you can to gain some speed. If you can, slide your body weight around to take up the majority of the force of the flip.

Answer format: ending1/ending2/ending3/ending4