for i in range (5):
    print("i =",i)
    
for i in range (3,12):
    print("i =",i)
    
for i in range (6,15,2):
    print("i =",i)
    
for i in range (6,16,2):
    print("i =",i)
    
for i in range (25,15,-3):
    print("i =",i)