We wrote a function that greets two people:
def greeting(first_name, second_name):
print("Hello,", first_name, "and", second_name)
The first name is already stored in the variable first_name, and the second is stored in the variable second_name. Your task is to call this function twice in the code section. The first time it should print Hello, first_name and second_name, and the second time Hello, second_name and first_name.