local j = 0

for i=0, 2 do

    turtle.dig()
	while turtle.detect() do
		turtle.digUp()
	end
    turtle.forward()
    turtle.digUp()
	while turtle.detectUp() do
		turtle.digUp()
	end
    turtle.up()
    turtle.digUp()
	while turtle.detectUp() do
		turtle.digUp()
	end
    turtle.turnRight()
    turtle.dig()
	while turtle.detect() do
		turtle.digUp()
	end
    turtle.forward()
    turtle.digUp()
	while turtle.detectUp() do
		turtle.digUp()
	end
    turtle.digDown()
    turtle.dig()
	while turtle.detect() do
		turtle.digUp()
	end
    turtle.forward()
    turtle.digUp()
	while turtle.detectUp() do
		turtle.digUp()
	end
    turtle.digDown()
    turtle.dig()
	while turtle.detect() do
		turtle.digUp()
	end
    turtle.forward()
    turtle.digUp()
	while turtle.detectUp() do
		turtle.digUp()
	end
    turtle.digDown()
    turtle.down()
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.forward()
    turtle.forward()
    turtle.forward()
    turtle.turnRight()

    if turtle.getFuelLevel() < 2 then

        j = j+1
        if j > 14 then
            j = 1
        end

        turtle.select(j)
        turtle.refuel(1)

    end

end