test

local laenge = 8

function nachVorne()

    for i = 1, 3, 1 do
        if turtle.detect() then
            turtle.dig()
        end
        turtle.forward()

        if turtle.detectUp() then
            turtle.digUp()
        end
    end

end

function gang()

    for i = 1, laenge, 1 do
        if turtle.detect() then
            turtle.dig()
        end
        turtle.forward()

        if turtle.detectUp() then
            turtle.digUp()
        end
    end

    turtle.turnLeft()
    turtle.turnLeft()

    for i = 1, laenge, 1 do
        if turtle.detect() then
            turtle.dig()
        end
        turtle.forward()
    end

end

nachVorne()
turtle.turnLeft()
gang()
gang()
turtle.turnRight()