Anytime bhai,
Some more things I wud like to add here is that there is a difference between extensions and subdivisions.
Apart from guidelines that govern Extensions,there are some observations which are associated with extensions
Extensions generally are accompanied by good volume,increasing within extensions of extensions,they trend and not trade,and are almost always accompanied by good fundamentals.
Subdivisons can appear as extensions,but theres less volume decresing with more subdivisions,they generally trade and not trend,and more often than not
fundamentals weaken subtly.
Elliott's channeling technique,further refined by Mr.Neely helps in identifying them.
And lastly subdivisons are actually combinations(Extensions dont combine,only correctives combine).This is my observation.
Warm regards
Amit