from machine import Pin
from time import sleep

led1=Pin(2,Pin.OUT)
led2=Pin(1,Pin.OUT)
led3=Pin(3,Pin.OUT)

count=5
while (count>0):
   led2.on()
   led3.off()
   led1.off()
   sleep(1)
   led2.off()
   led3.on()
   led1.off()
   sleep(1)
   led2.off()
   led3.off()
   led1.on()
   sleep(1)
   
  
   
print("Hello World")