将下列句子中的动词用不同的时态和人称变换，并将变换后的句子作为输出返回。


"John ate the pizza."
- John eats the pizza.
- John has eaten the pizza.
- John is eating the pizza.
- John will eat the pizza.
- He ate the pizza.
- He eats the pizza.
- He has eaten the pizza.
- He is eating the pizza.
- He will eat the pizza.
- She ate the pizza.
- She eats the pizza.
- She has eaten the pizza.
- She is eating the pizza.
- She will eat the pizza.
- They ate the pizza.
- They eat the pizza.
- They have eaten the pizza.
- They are eating the pizza.
- They will eat the pizza.