for i in [1, 2, 3, 4]:
	print(i)

numbers = [5, 6, 7, 8];
for i in numbers:
	print(i)

numers = (9, 10, 11, 12)
for i in numbers:
	print(i)

for i in range(13, 21): # does not include 21
	print(i)

print('')

for i in range(0, 41, 5): # steps of five
	print(i)

print('')

word = 'abcdef'
for l in word:
	print(l)
