D12121212121313233313123231323223313132322331323132233132312323321   >>    D1212121212131323331312323132322331313232233132313223313231232332   <<    D12121212121313233313123231323223313132322331323132233132312323323   >>      D12121212121313233313123231323223313132322331323132233132312323322   >>