from machine import Pin 
from time import sleep 

leds= [Pin(x,Pin.OUT) for x in range (13,3,-1)]
velocidad = 1

while True:

   for x in range (1,4):
      leds[x].on()
      leds[x+3].on()
      leds[x+6].on()
      sleep(1)
      leds[x].off()
      leds[x+3].off()
      leds[x+6].off()
  sleep(1)
  y=1
   for x in range(4,-1,-1):
      leds[x].on()
      leds[x+y].on()
       y=y+2
 
   for x in range (10):
     leds[x].off()
   sleep(1)