--local variables--

local target, blockDetail = turtle.inspect()
local wood = turtle.getItenDetail(1).name
local sapling = turtle.getItenDetail(2).name

--Functions--

function goF()
    while not turtle.forward() do
        turtle.dig()
    end
end

function goU()
    while not turtle.up() do
        turtle.digUp()
    end
end

function goD()
    while not turtle.down() do
        turtle.digDown()
    end
end

--Main Code--

for i = 1, 6 do
    goU
end