for x in range(0,11,2):
    print(x)
for x in range(0,20,3):
    print(x)
for x in range(0,20,4):
    print(x)
for x in range(0,72,12):
    print(x)

#nested loop sample
for y in range(1,11):
    for z in range(1,11):
        print(z * y, end='\t')
    print()
for y in range(10,21):
    for z in range(1,11):
        print(z * y, end='\t')
    print()
