local function setupChest()
    turtle.select(1)
    turtle.placeUp()
end

local function itemsIn()
    for i = 1, 16 do
        turtle.select(i)
        turtle.suck()
    end
    turtle.select(1)
end

local function itemsOut()
    for i = 1, 16 do
        turtle.select(i)
        turtle.dropUp()
    end
    turtle.select(1)
end

local function start()
    setupChest()
    for i = 1, 8 do
        itemsIn()
        itemsOut()
    end
end

start()