Please explain how to solve the 3 parts with an explanation, Thank you

Consider the following static game: 1. Find all the pure strategy Nash Equilibria. For parts 2-3, suppose this game is played. for two periods. At the beginning of period 2, the players can observe the outcome from period 1. There is no discounting. 2. Find all the pure strategy SPNE(s) for which the same pair of actions is played in period 2 regardlem what happened in period 1. 3. Can the payoff (4,4) be achieved in period 1 in a pure strategy SPNE? If so, nd such a SPNE; if not, prove why not