Tester.py

parametro_a = -7
parametro_b = -7 * 3
parametro_c = -7 * 2 + 1
print("{0}, {1}".format(parametro_a, parametro_c))
print("{1}, {0}".format(parametro_c, parametro_b))

What is the output?
Be careful of the whitespace(space,newline) in your answer.