D1212132333131333131231323132322331313232233132322131232313231111   >>    D121213233313133313123132313232233131323223313232213123231323111   <<    D1212132333131333131231323132322331313232233132322131232313231113   >>      D1212132333131333131231323132322331313232233132322131232313231112   >>