Mining Turtle's command

local t = turtle
local c = true
rednet.open("right")

while true do
  id,message = rednet.receive()
  if id == 12 then
    if message == "su" then
      t.digUp()
      t.up()
    elseif message == "giu" then
      t.digDown()
      t.down()
    elseif message == "w" then
      t.dig()
      t.forward()
    elseif message == "s" then
      t.back()
    elseif message == "a" then
      t.turnLeft()
    elseif message == "d" then
      t.turnRight()
    end
  end
end