A triple zig-zag is a rare phenomenon even in the foreign exchange markets, but it needs to be taken into consideration nevertheless. The reason is that, usually, the complex the correction, the powerful the breaking out of the recent ranges is going to be.
Triple zig-zags are more likely to be found as second waves of an impulsive move, or even b waves of a flat, and, rarely, but not impossible, as the fourth wave types in an impulsive move. They are being labeled w-x-y-xx-z, with the w representing the first zig-zag pattern, x wave representing the connective wave between the first and the second zig-zag, the y wave represents the second zig-zag, the xx wave represents the second connective wave that makes the link between the second and the third zig-zag and the z being the last zig-zag.
Usually a triple zig-zag retraces more than 61.8%, so if you are looking at a potential second wave that may be interpreted as a triple zig-zag than look for dip pullbacks into the territory of the first wave.
Wave xx in in a triple zig-zag is usually a zig-zag family pattern and it is taken less then 70% of wave y by price (but this is not mandatory). Wave xx will usually retrace retrace 30% of wave y, and it is most likely to retrace 38.2% of wave Y.
Another important characteristic for triple zig-zag patterns is that the z wave is usually equal in price to wave y and if not, then the next options for the end of wave z are, in this order, 61.8% or 161.8% of wave y.