D1212121212131323131133132311233132313231323221333132333132333131232323231   >>    D121212121213132313113313231123313231323132322133313233313233313123232323   <<    D1212121212131323131133132311233132313231323221333132333132333131232323233   >>      D1212121212131323131133132311233132313231323221333132333132333131232323232   >>