import sys
from time import sleep

bts = [
    [46, 111, 46],
    [46, 111, 45],
    [46, 111, 47],
    [46, 111, 45],
    [46, 111, 46],
]

q = 0
q_max = len(bts)

while True:
    sys.stdout.write("t" + bytearray(bts[q]).decode('utf-8') + 'r')
    if q == 2:
        sleep(0.5)
    q += 1
    
    if q + 1 > q_max:
        q = 0
    sleep(0.3)