In details :

path give say : "C:\test"

Dir1 -- inside Dir1 there is one more sub directories say Dir2
Dir2 -- inside Dir2 there 2 more sub directories say Dir2a/Dir2b
(Each of the sub directories Dir2a/b has 2 files each)
Dir3 -- inside Dir3 there is 2 more sub directories say Dir3a
(Each of the sub directories Dir3a has 2 files each)