Predict the output of the following code fragments:

for z in range(-500, 500, 100):
    print (z)

Predict the output of the following code fragments:

for y in range(500, 100, 100):
    print (" * ", y)

Predict the output of the following code fragments:

for x in [1,2,3]:
    for y in [4, 5, 6]:
        print (x, y)

Predict the output of the following code fragments:

for x in range(3):        
    for y in range(4):    
       print (x, y, x + y)