Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to ride an icelandic horse [title] Get him ready for tölt. [step] The tölt is one of the two gaits that is uniquely natural for icelandic horses. It is a four-beat gait where there is always a part of the foot on the ground.

Ending1: [substeps] During the tölt, the horse shifts his weight onto his dominant foot, toward the back of his legs. His right foot stays placed firmly on the ground behind him. Ending2: The horse uses the space between the pads of the feet and pedals to propel himself forwards. [title] Get in the habit of wearing your belt. Ending3: Any movement that pushes his hooves in one direction is a lunge by the horse. With both feet out on the ground, pronate a pair of heels together to form a firm, defined line. Ending4: It is an incredibly smooth gait that can still carry you along at up to 20 mph. Because of this, it's great for trail-riding and trekking.

Answer format: ending1/ending2/ending3/ending4