C#: How can I get text displayed in the console window to compare to an array?

How can I get text displayed in the console window to compare to an array? For example, I have a list displayed in the console like the one below


A 1


A 2


A 3





Now how can I get this list to compare with an array like the one below...and return something saying that it (list above) is contained in the array below


B 1


B 2


B 3





A 1


A 2


A 3





C 1


C 2


C3

C#: How can I get text displayed in the console window to compare to an array?
Just make it loop for each array you wish to display, or run functions for each sequentially.