def gerador_pares():
a = 2
while True:
yield a
a += 2
gen = gerador_pares()
print(next(gen))
for _ in range(20):
print(next(gen), end = " ")
g2 = gerador_pares()
for _ in range(6):
print(next(g2), end = " ")
print(next(gen))
print(next(g2))
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