D11221123122332313123231323223313113313231323113313231322331121   >>    D1122112312233231312323132322331311331323132311331323132233112   <<    D11221123122332313123231323223313113313231323113313231322331123   >>      D11221123122332313123231323223313113313231323113313231322331122   >>