D13133313221323331323331323123123233313232233131133132313232213232211   >>    D1313331322132333132333132312312323331323223313113313231323221323221   <<    D13133313221323331323331323123123233313232233131133132313232213232213   >>      D13133313221323331323331323123123233313232233131133132313232213232212   >>