from machine import Pin
from time import sleep

green=Pin.(9,Pin.OUT)
green1=Pin(10,Pin.OUT)
blue=Pin(7,Pin.OUT)
blue1=Pin(20,Pin.OUT)

while true:
    
    green.on()
    green1.on()
    sleep(1.6)
    green.off()
    green1.off()
    sleep(1.6)

    green.on()
    blue1.on()
    sleep(1.6)
    green.off()
    blue1.off()
    sleep(1.6)