hai

function fuel()
    if turtle.getFuelLevel() <= 10 then
        turtle.select(16)
        turtle.refuel()
    end
end

function dig()
    local length = 50

    for i=1, length, 1 do
        turtle.dig()

        turtle.forward()
        turtle.digUp()


        turtle.turnLeft()
        turtle.dig()

        turtle.forward()

        turtle.digUp()


        turtle.turnRight()
        turtle.turnRight()
        turtle.forward()

        turtle.dig()

        turtle.forward()
        turtle.digUp()


        turtle.turnLeft()
        turtle.turnLeft()

        turtle.forward()
        turtle.turnRight()

    end


end

rednet.open("right")
while true do
    message = rednet.receive()
    if message == "hai" then
        fuel()
        dig()
    end
end