import time
from machine import Pin
pin1 = Pin(5,Pin.OUT)
pin3 = Pin(4,Pin.OUT)
pin4 = Pin(18,Pin.OUT)
print("Hello, pleum-13")
for i in range(10):
print(i+1)
pin1.on()
time.sleep(0.5)
print("LED ON")
pin1.off()
time.sleep(0.5)
print("LED OFF")
pin3.on()
time.sleep(0.5)
print("LED ON")
pin3.off()
time.sleep(0.5)
print("LED OFF")
pin4.on()
time.sleep(0.5)
print("LED ON")
pin4.off()
time.sleep(0.5)
print("LED OFF")