turtle.select(1)
turtle.refuel()

turtle.select(2)

function buildTable2D(building)
  local dir = false
  for i=#building, 1, -1 do
    dir = not dir

    turtle.up()
    local line = building[i]

    if dir then
      for i2=1, #line do
        if line[i2] == 1 then
          turtle.placeDown()
        end
        turtle.forward()
      end
    else
      for i2=#line, 1, -1 do
        if line[i2] == 1 then
          turtle.placeDown()
        end
        turtle.forward()
      end
    end

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


buildTable2D(
  {
    {1,0,0,1,1,1,1},
    {1,0,0,1,0,0,0},
    {1,0,0,1,0,0,0},
    {1,1,1,1,1,1,1},
    {0,0,0,1,0,0,1},
    {0,0,0,1,0,0,1},
    {1,1,1,1,0,0,1},
  }
)