from machine import Pin
from time import sleep


hieu = Pin (4, Pin.OUT)
for i in range (1):
 hieu.on()
 sleep (0.5)
 hieu.off()
 sleep(0.5)
 print(i+1)

hieu = Pin (2, Pin.OUT)
for i in range (1):
 hieu.on()
 sleep (0.5)
 hieu.off()
 sleep(0.5)
 print(i+1)

hieu = Pin (4, Pin.OUT)
for i in range (1):
 hieu.on()
 sleep (0.5)
 hieu.off()
 sleep(0.5)
 print(i+1)

hieu = Pin (2, Pin.OUT)
for i in range (1):
 hieu.on()
 sleep (0.5)
 hieu.off()
 sleep(0.5)
 print(i+1)

hieu = Pin (4, Pin.OUT)
for i in range (1):
 hieu.on()
 sleep (0.5)
 hieu.off()
 sleep(0.5)
 print(i+1)

hieu = Pin (2, Pin.OUT)
for i in range (1):
 hieu.on()
 sleep (0.5)
 hieu.off()
 sleep(0.5)
 print(i+1)

hieu = Pin (4, Pin.OUT)
for i in range (1):
 hieu.on()
 sleep (0.5)
 hieu.off()
 sleep(0.5)
 print(i+1)

hieu = Pin (2, Pin.OUT)
for i in range (1):
 hieu.on()
 sleep (0.5)
 hieu.off()
 sleep(0.5)
 print(i+1)