from machine import Pin
from time import sleep
led1=Pin(12,Pin.OUT)
led2=Pin(14,Pin.OUT)
led3=Pin(27,Pin.OUT)
led4=Pin(26,Pin.OUT)
while True:
  led1.value(1)
  sleep(0.9)
  led2.value(1)
  sleep(0.9)
  led3.value(1)
  sleep(0.9)
  led4.value(1)
  sleep(0.9)
  led1.value(0)
  led2.value(0)
  led3.value(0)
  led4.value(0)
  sleep(0.9)
  led4.value(1)
  sleep(0.9)
  led3.value(1)
  sleep(0.9)
  led2.value(1)
  sleep(0.9)
  led1.value(1)
  sleep(0.9)
  led1.value(0)
  led2.value(0)
  led3.value(0)
  led4.value(0)
  sleep(0.9)