D12121212121313232233132332313231333132313233313113313231313232111231   >>    D1212121212131323223313233231323133313231323331311331323131323211123   <<    D12121212121313232233132332313231333132313233313113313231313232111233   >>      D12121212121313232233132332313231333132313233313113313231313232111232   >>