D132311233131333131331123232233132313232233133311221123231323221211   >>    D13231123313133313133112323223313231323223313331122112323132322121   <<    D132311233131333131331123232233132313232233133311221123231323221213   >>      D132311233131333131331123232233132313232233133311221123231323221212   >>