What are the Nash equilibria from these payoff matrices (if there are any)? Are they the 'best' outcomes?

	Left Player 2	Right
Player 1 Up	(2,2)	(0,0)
Down	(0,0)	(1,1)

	Left Player 2	Right
Player 1 Up	(5,1)	(2,0)
Down	(5,1)	(1,2)

	Left Player 2	Middle	Right
Player 1 Up	(6,2)	(5,1)	(4,3)
Middle	(3,6)	(8,4)	(2,1)
Down	(2,8)	(9,6)	(3,0)