D1212121212131323331323231323132312323132322331311331323132333132322113111   >>    D121212121213132333132323132313231232313232233131133132313233313232211311   <<    D1212121212131323331323231323132312323132322331311331323132333132322113113   >>      D1212121212131323331323231323132312323132322331311331323132333132322113112   >>