w1

rednet.open("right")
local id, msg = rednet.receive()

function soul()
  print("got it")
  redstone.setOutput("back", true)
  sleep(10)
  redstone.setOutput ("back", false)
  rednet.send(117, "done", wither)
    if msg == "done" then
      if redstone.getInput("left") == false then
        soul()
      end
    end
end

while not redstone.getInput("left") do
  soul()
end