import time
time.sleep(0.1) # Wait for USB to become ready

print("Hello, Pi Pico!")
s0 = Pin(0, Pin.OUT)
s1 = Pin(1, Pin.OUT)
s2 = Pin(2, Pin.OUT)
s3 = Pin(3, Pin.OUT)
while True:
    s0.low() #1
    s1.low()
    s2.low()
    s3.low()
    time.sleep(0.1)
    s0.high() #2
    s1.low()
    s2.low()
    s3.low()
    time.sleep(0.1)
    s0.low() #3
    s1.high()
    s2.low()
    s3.low()
    time.sleep(0.1)
    s0.high() #4
    s1.high()
    s2.low()
    s3.low()
    time.sleep(0.1)
    s0.low() #5
    s1.low()
    s2.high()
    s3.low()
    time.sleep(0.1)
    s0.high() #6
    s1.low()
    s2.high()
    s3.low()
    time.sleep(0.1)
    s0.low() #7
    s1.high()
    s2.high()
    s3.low()
    time.sleep(0.1)
    s0.high() #8
    s1.high()
    s2.high()
    s3.low()
    time.sleep(0.1)
    s0.low() #9
    s1.low()
    s2.low()
    s3.high()
    time.sleep(0.1)
    s0.high() #10
    s1.low()
    s2.low()
    s3.high()
    time.sleep(0.1)
    s0.low() #11
    s1.high()
    s2.low()
    s3.high()
    time.sleep(0.1)
    s0.high() #12
    s1.high()
    s2.low()
    s3.high()
    time.sleep(0.1)
    s0.low() #13
    s1.low()
    s2.high()
    s3.high()
    time.sleep(0.1)
    s0.high() #14
    s1.low()
    s2.high()
    s3.high()
    time.sleep(0.1)
    s0.low() #15
    s1.high()
    s2.high()
    s3.high()
    time.sleep(0.1)
    s0.high() #16
    s1.high()
    s2.high()
    s3.high()
    time.sleep(0.1)