TheTextFile.txt

Root
	CATEGORY A
		Sub-Category_A1
			foo-1
			foo-2
			foo-3
		Sub-Category_A2
			bar-1
			bar-2
			bar-3
			bar-4
		Sub-Category_A3
			foobar-1
			foobar-2
			foobar-3
			foobar-4
			foobar-5
		Sub-Category_A4
			dog
			cat
			duck
			rabbit
			chicken
			pig
		Sub-Category_A5
			tuxpaint
			gimp
			imagemagick
		Sub-Category_A6
			gawk
			sed
			tar
			python
			make
			java
			grep
			perl
		Sub-Category_A7
			linux
			mac
			BSD
	CATEGORY B
		Sub-Category_B1
			lion
			leopard
		Sub-Category_B2
			paris
			harare
			new york
			kinshasa
			lagos
			london
			dakar
			melbourne
			moscow
			namib
			tokyo
			cape town
			chinsali
			kigali
		Sub-Category_B3
			clouds
			sunshine
			rain
			wind
		Sub-Category_B4
			samsung
			LG
			nokia
			huawei
			sony ericsson
			phillips
			motorola
			ZTE
		Sub-Category_B5
			married
			single
			divorced
	CATEGORY C
		Sub-Category_C1
			jonathan
			jacob
			john
			joshua
			jeremiah
			joseph
			justin
			justice
			jambazi
			jeremy
			josephine
			jennipher
			jane
			jenny
	CATEGORY D
		Sub-Category_D1
			this is a sentence
			this is another sentence
			and another one
			what?
			really?
			You are so annoying
			Ok shut up
			what is wrong with this country?
			you are now sounding like Daffy Duck
			are you related?
			maybe
			are you exclusive property of Warner Brothers Inc?
			no. why?
			nothing, really
			just wanted to annoy you
			I guess I succeeded!