Advance seven steps: left, right, left, right, left, right, left.
Take seven strides ahead in this sequence: left, right, left, right, left, right, left.
March forward with seven moves, alternating left and right starting with left.
Step forward seven times following the order: left, right, left, right, left, right, left.
Proceed with seven steps, beginning with left and switching sides each time: left, right, left, right, left, right, left.
