Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to do a donkey kick [title] Get into your starting posture. [step] Begin with both of your feet flat on the floor and your arms raised above your head, near your ears. Your feet should be positioned evenly right next to each other.

Ending1: [substeps] Keep your knees together, slightly bent and directly below your feet, and your arms in front of you. Step forward with one one leg, then follow it with the other. Ending2: Your hips should be hip-width apart, slightly bent. [substeps] To start, you will need to stick your leg out or move it slightly to the side to lock your leg in place. Ending3: [substeps] If the donkey kicks with his hind leg, you will be in the left position. If the donkey uses his rear leg, you will usually the right position. Ending4: [substeps] For children and beginners, you can adjust the starting position by beginning in a squatting position, resting your body weight on the balls of your feet. Your arms should be on the outside of your legs, flat on the floor.

Answer format: ending1/ending2/ending3/ending4