Move ahead by taking four steps in this sequence: right, left, right, left.
Advance forward with a four-step pattern: right, left, right, left.
Stride onward with steps numbered four, following the order right, left, right, left.
Proceed forward by stepping four times: start with right, then left, again right, and finish left.
Take four strides forward, alternating right, left, right, and left in that order.
