from machine import Pin
from utime import sleep
r1=Pin(14,Pin.OUT)
y1=Pin(13,Pin.OUT)
g1=Pin(11,Pin.OUT)
r2=Pin(3,Pin.OUT)
y2=Pin(1,Pin.OUT)
g2=Pin(0,Pin.OUT)
r3=Pin(16,Pin.OUT)
y3=Pin(17,Pin.OUT)
g3=Pin(19,Pin.OUT)
r4=Pin(28,Pin.OUT)
y4=Pin(27,Pin.OUT)
g4=Pin(26,Pin.OUT)
while True:
    y1.off()
    y4.off()
    g1.on()
    r2.on()
    r3.on()
    r4.on()
    sleep(5.0)
    y1.on()
    y2.on()
    g1.off()
    r2.off()
    sleep(5.0)
    r1.on()
    g2.on()
    y1.off()
    y2.off()
    sleep(5.0)
    g2.off()
    r3.off()
    y2.on()
    y3.on()
    sleep(5.0)
    r2.on()
    g3.on()
    y2.off()
    y3.off()
    sleep(5.0)
    y3.on()
    y4.on()
    g3.off()
    r4.off()
    sleep(5.0)
    g4.on()
    r3.on()
    y3.off()
    y4.off()
    sleep(5.0)
    g4.off()
    r1.off()
    y4.on()
    y1.on()
    sleep(5.0)