D13133313221323331323331323123123233313232233131133132333132311312331   >>    D1313331322132333132333132312312323331323223313113313233313231131233   <<    D13133313221323331323331323123123233313232233131133132333132311312333   >>      D13133313221323331323331323123123233313232233131133132333132311312332   >>