Hi everyone.
As you know, There are 3 orders of simple patterns of waves, also, there are 13 variations of simple patterns: impulse, ending diagonal , leading diagonal , zigzag , double zigzag , triple zigzag , regular flat, expanded flat, running flat, contracting triangle, descending triangle , ascending triangle and expanding triangle.

Zigzag (5-3-5)
A single zigzag is a simple three-wave declining pattern labeled ABC

Fibonacci ratio:
Wave B = 50%, 61.8%, 76.4% or 85.4% of wave A
Wave C = 61.8%, 100%, 123.6% or 161.8% of wave A