D12121323331322331311132313132313331323221123313231323111121221   >>    D1212132333132233131113231313231333132322112331323132311112122   <<    D12121323331322331311132313132313331323221123313231323111121223   >>      D12121323331322331311132313132313331323221123313231323111121222   >>