D13133313221323331323331323123123233313232233131133132333132332313211   >>    D1313331322132333132333132312312323331323223313113313233313233231321   <<    D13133313221323331323331323123123233313232233131133132333132332313213   >>      D13133313221323331323331323123123233313232233131133132333132332313212   >>