Take seven strides ahead, stepping left, right, left, right, left, right, then left.
Move forward with a sequence of seven steps: left, right, left, right, left, right, left.
Advance through seven steps, alternating left and right starting with left.
Proceed forward by seven steps, following the order left, right, left, right, left, right, left.
Step forward seven times, beginning with the left foot and alternating right and left thereafter.
