local modem = peripheral.wrap("left")
local event, modemSide, senderChannel,
  replyChannel, message, senderDistance = os.pullEvent("modem_message")


modem.open(1301)--Open channel 3 so that we can listen on it
print("The message was: "..message)
modem.close(1301)

modem.open(1302)--Open channel 3 so that we can listen on it
print("The message was: "..message)
modem.close(1302)

modem.open(1303)--Open channel 3 so that we can listen on it
print("The message was: "..message)
modem.close(1303)