Turtle UU-Craft

for i = 1,16 do
    function suck(i)
        turtle.select(i)
        turtle.suckUp(64)
    end
end

function craft(i)
    turtle.select(16)
    for x = 1,i do
        turtle.craft()
        turtle.dropDown()
    end
end

function select(i)
    turtle.select(i)
end

for a = 1,16 do
    f = turtle.getItemCount(a)
    if a >= 1 then
        turtle.select(a)
        turtle.dropDown()
    end
end

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while true do
    rednet.open("right")
    x, y, z = rednet.receive()

    if y == 1 then      -- Cobble
        suck(3)
        select(16)
        craft(16)
    end
    if y == 2 then      -- Stone
        suck(6)
        select(16)
        craft(16)
    end
    if y == 3 then      -- Glass
        suck(2) suck(5) suck(7) suck(10)
        select(16)
        craft(32)
    end
    if y == 4 then      -- Grass Block
        suck(5) suck(9)
        select(16)
        craft(16)
    end
    if y == 5 then      -- Moss Stone
        suck(6) suck(9) suck(11)
        select(16)
        craft(16)
    end
    if y == 6 then      -- Sandstone
        suck(7) suck(10)
        select(16)
        craft(16)
    end
    if y == 7 then      -- Snow
        suck(1) suck(3)
        select(16)
        craft(4)
    end
    if y == 8 then      -- Water Still
        suck(6) suck(10)
        select(16)
        craft(1)
    end
    if y == 9 then      -- Lava Still
        suck(2) suck(6) suck(10)
        select(16)
        craft(1)
    end
    if y == 10 then     -- Iron Ore
        suck(1) suck(3) suck(6) suck(9) suck(11)
        select(16)
        craft(2)
    end
    if y == 11 then     -- Gold Ore
        suck(2) suck(5) suck(6) suck(7) suck(10)
        select(16)
        craft(2)
    end
    if y == 12 then     -- Obsidian
        suck(1) suck(3) suck(5) suck(7)
        select(16)
        craft(13)
    end
    if y == 13 then     -- Netherrack
        suck(3) suck(6) suck(9)
        select(16)
        craft(16)
    end
    if y == 14 then     -- Glowstone
        suck(2) suck(5) suck(7) suck(9) suck(10) suck(11)
        select(16)
        craft(8)
    end
    if y == 15 then     -- Oak Wood
        suck(2)
        select(16)
        craft(8)
    end
    if y == 16 then     -- Cactus
        suck(2) suck(5) suck(6) suck(7) suck(9) suck(11)
        select(16)
        craft(64)
    end
    if y == 17 then     -- Vines
        suck(1) suck(5) suck(9)
        select(16)
        craft(32)
    end
    if y == 18 then     -- Wool
        suck(1) suck(3) suck(10)
        select(16)
        craft(13)
    end
end