TheOneOnTheLeft
tOOtl
You can start the cycle from any unsolved piece. If VWXYZ are unsolved, and V goes to where W is, W goes to where X is, etc. (and Z goes to where V initially was), then you can, as Ollie described, start the cycle at V and solve in the order VWXYZV, but you could just as easily solve XYZVWX or ZVWXYZ, by breaking into the new cycle by shooting to X or Z respectively.