D233313133313221323132322331311211331323132313331323123232213111   >>    D23331313331322132313232233131121133132313231333132312323221311   <<    D233313133313221323132322331311211331323132313331323123232213113   >>      D233313133313221323132322331311211331323132313331323123232213112   >>