yep mung fu is on the ball.
really should be thought of as the 3 original forms and the masterclass form created by clc which is mung fu chut lam(wether it really is better than the original 3 is debateable).
He is also correct that some students only asked after the core forms, like my sigung, this doesnt mean that sub ji etc arnt pak mei, just that they where added later and dont necessarily accentuate the original essence.
But that doesnt mean they arnt effective or worthwhile.
peace out.
There is no technique that speed cannot defeat......