print(list(range(0)))
print(list(range(10)))
print(list(range(1, 10)))
start = 2
stop = 14
step = 2
print(list(range(start, stop, step)))
start = 2
stop = -14
step = -2
print(list(range(start, stop, step)))
a = range(1, 4)
for i in a:
    for a in range(21, -1, -2):
        print(a)
for a in range(0, 20, 2):
    print(a)

9b52c5bea86b8fa6a1e29c45fa9e545dafa447be
<mask token>

print(list(range(0)))
print(list(range(10)))
print(list(range(1, 10)))
<mask token>
print(list(range(start, stop, step)))
<mask token>
print(list(range(start, stop, step)))
<mask token>
for i in a:
    for a in range(21, -1, -2):
        print(a)
for a in range(0, 20, 2):
    print(a)

print(list(range(0)))
print(list(range(10)))
print(list(range(1, 10)))
start = 2
stop = 14
step = 2
print(list(range(start, stop, step)))
start = 2
stop = -14
step = -2
print(list(range(start, stop, step)))
a = range(1, 4)
for i in a:
    for a in range(21, -1, -2):
        print(a)
for a in range(0, 20, 2):
    print(a)
