from machine import Pin
from utime import sleep

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

while True:
    blue.off()
    blue1.off()
    green.on()
    green1.on()
    sleep(1.6)

    blue.on()
    blue1.on()
    green.off()
    green1.off()
    sleep(2)