D12121212121313232233132332313231333132313233313113313221123231   >>    D1212121212131323223313233231323133313231323331311331322112323   <<    D12121212121313232233132332313231333132313233313113313221123233   >>      D12121212121313232233132332313231333132313233313113313221123232   >>