D12121212121313233313123231323223313132322331323223313111311231   >>    D1212121212131323331312323132322331313232233132322331311131123   <<    D12121212121313233313123231323223313132322331323223313111311233   >>      D12121212121313233313123231323223313132322331323223313111311232   >>