os.loadAPI("t")

function newRow(dir)
    if dir == "right" then
        t.right(1,true)
        t.turnRight()
    else
        t.left(1,true)
        t.turnLeft()
    end
end

function newLayer()
    t.left(4)
    t.back(4)
    t.up()
end

fl,wa,ce,wi = 1,2,3,4
be,dr,cr,ch = 5,6,7,8
fu          = 9

t.placeRow(5,"down","forward",{0,0,0,0,0})
newRow("right")
t.placeRow(5,"down","forward",{0,fl,fl,fl,0})
newRow("left")
t.placeRow(5,"down","forward",{fl,fl,fl,fl,0})
newRow("right")
t.placeRow(5,"down","forward",{0,fl,fl,fl,0})
newRow("left")
t.placeRow(5,"down","forward",{0,0,0,0,0})
newLayer()
t.placeRow(5,"down","forward",{wa,wa,wa,wa,wa})
newRow("right")
t.placeRow(5,"down","forward",{wa,fu,ch,cr,wa})
newRow("left")
t.placeRow(5,"down","forward",{0,0,0,0,wa})
newRow("right")
t.placeRow(5,"down","forward",{wa,0,be,0,wa})
newRow("left")
t.placeRow(5,"down","forward",{wa,wa,wa,wa,wa})
newLayer()
t.placeRow(5,"down","forward",{wa,wa,wi,wa,wa})
newRow("right")
t.placeRow(5,"down","forward",{wa,0,0,0,wa})
newRow("left")
t.placeRow(5,"down","forward",{wa,0,0,0,wa})
newRow("right")
t.placeRow(5,"down","forward",{wa,0,0,0,wa})
newRow("left")
t.placeRow(5,"down","forward",{wa,wa,wi,wa,wa})
newLayer()
t.placeRow(5,"down","forward",{wa,wa,wa,wa,wa})
newRow("right")
t.placeRow(5,"down","forward",{wa,0,0,0,wa})
newRow("left")
t.placeRow(5,"down","forward",{wa,0,0,0,wa})
newRow("right")
t.placeRow(5,"down","forward",{wa,0,0,0,wa})
newRow("left")
t.placeRow(5,"down","forward",{wa,wa,wa,wa,wa})
newLayer()
t.placeRow(5,"down","forward",{ce,ce,ce,ce,ce})
newRow("right")
t.placeRow(5,"down","forward",{ce,ce,ce,ce,ce})
newRow("left")
t.placeRow(5,"down","forward",{ce,ce,ce,ce,ce})
newRow("right")
t.placeRow(5,"down","forward",{ce,ce,ce,ce,ce})
newRow("left")
t.placeRow(5,"down","forward",{ce,ce,ce,ce,ce})
newLayer()
t.turnAround()
t.down()
t.forward()
t.down(4)
t.left(2,true)
t.turnLeft()
t.place(dr)
t.left(2,true)
t.turnLeft()