How to make most frequent word pair from textfile in C#?

Question

I have split word but I need random word pair which is accure more time my textfile

Priti Padhiyar · Answer

I didn't get your answer GAC sharpoint

Priti Padhiyar · Answer

Yeah I got the pair of words. But I need some random accurate word pairs as well as count of word pair.... for example...... Key part 5 key phrase 3 optional key 1 reference dictionary 6 from my input textfile...

Dharmraj Thakur · Answer

Its working fine... Where is the problem??