digMove 3x3 tunnel Turtle Power

function Dig()
  turtle.turnLeft()
  turtle.dig()
  turtle.turnRight()
  turtle.dig()
  turtle.turnRight()
  turtle.dig()
  turtle.turnLeft()
end

function LayTorch()
  turtle.select(1)
  turtle.turnLeft()
  turtle.turnLeft()
  turtle.place()
  turtle.turnRight()
  turtle.turnRight()
end

function Up()
  turtle.digUp()
  turtle.up()
end

function Down()
  turtle.down()
  turtle.down()
  turtle.dig()
  turtle.forward()
end

function Move()
    Dig()
    Up()
    Dig()
    Up()
    Dig()
    Down()
  end

function Refuel()
    turtle.select(16)
    turtle.refuel(1)
    turtle.select(1)
  end

while true do
Move()
Move()
Move()
Move()
Move()
Move()
LayTorch()
Refuel()

end