 
 <prompt> Jordan na hockey goalie. For di first period of one game, e block four shots. For di second period, e block twice as many shots. For di third period, e block three fewer shots than di second period. Wen di game end after di fourth period, e don block 21 shots for all. How many shots Jordan block for di fourth period? <response>: ```Make F di number of shots wey Jordan block for di fourth period.
For di second period, e block 2 * 4 = 8 shots.
For di third period, e block 8 - 3 = 5 shots.
For di whole game, e block 4 + 8 + 5 + F = 17 + F = 21 shots.
So, Jordan block F = 21 - 17 = 4 shots for di fourth period.

Di answer go be 4.``` 