Esther M. Zimmer Lederberg: Stepanov

Figure "a": a step forward on the right foot, with contact with the ground (square note), followed by a step to the left on the left foot with contact with the ground (square note), then a step backward on the right foot with contact with the ground (square note). The dashed "bow" ties the step directions together with the contact with the ground as one multi-action step in all three cases.