Beginning with the left foot raised in front in passo naturale, with the body turned a little per fianco to the right side, jump up, turning to the left side, and at the same time draw back the left foot, and do as in Rule 137. This can also be done per contrario, and also beginning with the left foot raised in front [sic]. It is so called because you 're-chase' one foot with the other, and jump per fianco.