Question: Consider buying a strategy with tye following payoff diagram below:

If we are to look at this picture as a snake that swallowed a pyramid, then the left corner of the pyramid is X1 and the right corner of the hat is X3. If the snake is facing east, then its tail is XO and its head is 84. The middle of the pyramid corresponds to X2. What does this strategy consist of? Be explicit regarding the exercise prices, long and short positions, etcetera