print("'on' is dit, 'off' is dah")
while True:
  from time import sleep
  print("on")
  sleep(0.5)
  print("on")
  sleep(0.5)
  print("on")
  sleep(1)
  print("on")
  sleep(0.5)
  print("off")
  sleep(1)
  print("on")
  sleep(0.5)
  print("on")
  sleep(0.5)
  print("on")
  sleep(0.5)
  print("on")
  sleep(2.5)
  print("off")
  sleep(0.5)
  print("on")
  sleep(0.5
  print("on")
  sleep(1)
  print("on")
  sleep(0.5)
  print("on")
  sleep(0.5)
  print("off")
  sleep(1)
  print("off")
  sleep(0.5)
  print("on")
  sleep(0.5)
  print("on")
  sleep(1)
  print("on")
  sleep(1000000000000000000000)