#n = int(input("n = "))
n = 10
for a in range(n * 2):
print('o', end='')
print()
for b in range(n - 2):
print('0', end='')
for c in range(n - 1):
print(' ', end='')
print('0')
for a in range(n * 2):
print('o', end='')
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