Wave-1 Extended The move that follows Extended wave-1 (wave-2) cannot retrace much more than 38.2% of wave1. Wave-2 will not likely be a Zigzag pattern. If you do see a Zigzag form after the 1st wave Extension, most likely it will be the completion of only wave-a of a larger Flat correction for wave-2. Wave-2 cannot be a Running correction. Wave-5 must be the shortest of the three thrust waves (1,3,5). Probabilities greatly favor that wave-2 will be more complex and time-consuming than wave-4 and it is likely that it will be the most complex and time consuming pattern in the entire series (1-5). If the pattern is above polywave development, the probabilities greatly favor that wave-1 will be the subdivided wave (the most complex of the three thrust segments). If wave-1 is not the subdivided pattern, then it must be wave-3. 11-2 Advanced Progress Label Application
Wave-1 Non-extended If the pattern is above Complexity level 1, the third or fifth wave will be the subdivided segment, not wave-1. This is not to imply wave-1 will not subdivide, it just means it will not be the subdivided wave of the group. In other words, wave-3 or 5 will be more subdivided.
Textbook : Wave-2 If wave-1 turns out to be (or is believed to be) the longest wave in the sequence, the second wave cannot retrace much more than 38.2% of the first wave. If the first wave is not the longest wave, the lowest point of wave-2 can retrace as much as 99% of wave-1.