import machine 
matrix = [
    [1, 2],
    [3, 4, 5, 6],
    [7, 8, 9, 10],
    [11, 12, 13, 14],
    [15, 16, 17, 18],
    [19, 20, 21, 22]
]
led1 = machine.Pin(28, machine.Pin.OUT)
led2 = machine.Pin(27, machine.Pin.OUT)
led3 = machine.Pin(26, machine.Pin.OUT)

for i in range(100)
led1.high()
led1.low()
led2.high()
led2.low()
led3.high()
led3.low()