function up()
  turtle.up()
end

function down()
  turtle.down()
end

function forward()
  turtle.forward()
end

function back()
  turtle.back()
end

function left()
  turtle.turnLeft()
end

function right()
  turtle.turnRight()
end

function refuel()
  if turtle.getFuelLevel() < 241 then
    turtle.select(16)
    turtle.refuel()
    turtle.select(1)
  end
end

refuel()

function lights()
    forward()
    forward()
    right()
    forward()
    forward()
    forward()
    forward()
    up()
    up()
    turtle.digUp()
    turtle.placeUp()
    down()
    down()
    left()
    forward()
    forward()
    forward()
    forward()
    forward()
    up()
    up()
    turtle.digUp()
    turtle.placeUp()
    down()
    down()
    forward()
    forward()
    forward()
    up()
    up()
    turtle.digUp()
    turtle.placeUp()
    down()
    down()
    right()
    right()
    forward()
    left()
    forward()
    forward()
    forward()
    forward()
    left()
    forward()
    forward()
    forward()
    forward()
    forward()
    forward()
    left()
    forward()
    up()
    up()
    turtle.digUp()
    turtle.placeUp()
    down()
    down()
    forward()
    forward()
    forward()
    forward()
    forward()
    forward()
    forward()
    forward()
    forward()
    forward()
    up()
    up()
    turtle.digUp()
    turtle.placeUp()
    down()
    down()
    forward()
    left()
    forward()
    forward()
    forward()
    forward()
    forward()
    forward()
    left()
    forward()
    forward()
    forward()
    forward()
    left()
    forward()
    up()
    up()
    turtle.digUp()
    turtle.placeUp()
    down()
    down()
    right()
    right()
    forward()
    forward()
    forward()
    up()
    up()
    turtle.digUp()
    turtle.placeUp()
    down()
    down()
    forward()
    forward()
    forward()
    forward()
    forward()
    up()
    up()
    turtle.digUp()
    turtle.placeUp()
    down()
    down()
    forward()
    forward()
    right()
    right()
end