from microbit import *

def show_led(x, y):
if x < 5 and x >=0 and y < 5 and y >= 0:
display.set_pixel(x, y, 9)

x = 0
y = 0

for i in range(9):

for j in range(i+1):
if j < i - 4:
continue
if i % 2 == 0:
print(x+j, y+(i-j))
show_led(x+j, y+(i-j))
else:
print(x+(i-j), y+j)
show_led(x+(i-j), y+j)
sleep(100)

print('---')