gistfile1.txt

I have a nested set of hashes like:

[A]
	[B]
	[C]
		[D]
		[E]
	[F]
[A']
	[B']
	[C']
		[D']
		[E']
	[F']
[A'']
	[B'']
	[C'']
		[D'']
		[E'']
	[F'']
	
I want to get an array like:

[A,A',A'']
[B,B',B'']
[C,C',C'']
[D,D',D'']