from machine import Pin
from utime import sleep

print("10c")

ledR = Pin(2, Pin.OUT)
ledG = Pin(4, Pin.OUT)
ledW = Pin(12, Pin.OUT)
while True:
  ledR.on()
  sleep(0.5)
  ledR.off()
  sleep(0.5)      
 
  ledG.on()
  sleep(0.5)
  ledG.off()
  sleep(0.5) 

  ledW.on()
  sleep(0.5)
  ledW.off()
  sleep(0.5) 

  ledG.on()
  sleep(0.5)
  ledG.off()
  sleep(0.5)