Elliot noted this distinction, usually alternating, if wave 2 is simple, then wave 4 will be difficult, and vice versa. A simple correction is usually reasonable movement of "zigzag". If it occurs in wave 2, wave 4 will be a difficult side correction 85 percent of all unexpected, "lashes", or deceptive movements to occur during the wave 4. In the observation of wave 4 remember the "indisputable" rule: Wave 4 never goes below the top of wave 1