from machine import Pin
from time import sleep

led1 = Pin(2, Pin.OUT)
led2 = Pin(4, Pin.OUT)
led3 = Pin(5, Pin.OUT)

while True:
    led1.on()
    sleep(10)
    led1.off()
    for i in range(3):
        led2.on()
        sleep(1)
        led2.off()
        sleep(1)
    led3.on()
    sleep(10)
    led3.off()