D1212121221323132313232332313232233132333131211331323331331123232111   >>    D121212122132313231323233231323223313233313121133132333133112323211   <<    D1212121221323132313232332313232233132333131211331323331331123232113   >>      D1212121221323132313232332313232233132333131211331323331331123232112   >>