D12121323331313331312313231323132322132313232233132233131323221121   >>    D1212132333131333131231323132313232213231323223313223313132322112   <<    D12121323331313331312313231323132322132313232233132233131323221123   >>      D12121323331313331312313231323132322132313232233132233131323221122   >>