from machine import Pin
from time import sleep


led1 =Pin(12, Pin.OUT)
led2 = Pin(5, Pin.OUT)
led3 = Pin(4, Pin.OUT)
led4 = Pin(0, Pin.OUT)




while True:

 led1.on()

 sleep(4.0)

 led3.on()

 sleep(0.4)

 led1.off()
 led3.off()
 led4.on()

 sleep(1.5)

 led4.off()
 led2.on()

 sleep(3.0)

 led2.off()

print("stop")