-- 1 - red
-- 2 - black
-- 3 - glass

slots= {
  {3,3,3,3,2,2,3,3},
  {3,3,3,2,1,1,2,3},
  {3,3,2,1,1,1,1,2},
  {3,2,1,1,1,1,2,3},
  {2,1,1,1,1,2,3,3},
  {3,2,1,1,1,1,2,3},
  {3,3,2,1,1,1,1,2},
  {3,3,3,2,1,1,2,3},
  {3,3,3,3,2,2,3,3}
}

for stroka = 1,#slots do
    for zmeyka = 1,#slots[stroka] do
      slot= slots[stroka][zmeyka]
      turtle.select(slot)
      turtle.forward ()
      turtle.placeDown()
    end

    for nazat=1,#slots[stroka] do
    turtle.back()
    end

    turtle.turnLeft()
    turtle.forward()
    turtle.turnRight()
end