# Modules
from machine import Pin
from time import sleep

# Declaration of LEDs
led1 = Pin(13, Pin.OUT)
led2 = Pin(2, Pin.OUT)
led3 = Pin(4, Pin.OUT)
led4 = Pin(14, Pin.OUT)

while True:
    # Turning every LED on
    led1.on()
    led2.on()
    led3.on()
    led4.on()

    # Turning them off with different delay times
    led1.off()
    sleep(1)
    led2.off()
    sleep(0.2)
    led3.off()
    sleep(0.04)
    led4.off()
    sleep(2.75)