D132311233131333131331123232233132313232233133313132313231333131322121   >>    D13231123313133313133112323223313231323223313331313231323133313132212   <<    D132311233131333131331123232233132313232233133313132313231333131322123   >>      D132311233131333131331123232233132313232233133313132313231333131322122   >>