Tree turtle

while true do
    turtle.select(1)
    turtle.refuel()
    turtle.turnRight()
    turtle.suck(1)
    turtle.turnLeft()
    turtle.place()
    turtle.suckDown(1)
    turtle.select(2)
    turtle.turnLeft()
    turtle.suck(turtle.getItemSpace())
    turtle.turnRight()
    repeat
        turtle.select(2)
        turtle.place()
        turtle.select(1)
    until turtle.compare() == true
    turtle.dig()
    turtle.forward()
    for i=1,6 do
        if turtle.compareUp() == true then
                turtle.digUp()
                turtle.up()
        end
    end
    for i=1,6 do
        turtle.down()
    end
    turtle.back()
    turtle.refuel(1)
    turtle.dropDown()
    turtle.select(3)
    turtle.dropDown()
    turtle.select(2)
    turtle.turnLeft()
    turtle.drop()
    turtle.turnRight()
    os.sleep(120)
end