i = 0
while i < 10:
    print(i)
    i += 1

i = 0
while i < 10:
    i += 1
    print(i)

i = 0
while True:
    print(i)
    i += 1
    if i >= 10:
        break

i = 0
while True:
    if i >= 10:
        break
    print(i)
    i += 1