sentences:  Workouts in Australia are similar to the UK however, a horse is often asked to show lengthening in the trot and canter and simple or flying changes of lead at the canter.In North American classes, the show hack is to show at extended, regular and collected versions of the walk, trot and canter, as well as performing a hand gallop, halt and the rein back.Particular emphasis is placed on gait transitions and obedience.