D13133313221323331323331323123123233313232233131133132322331311123231   >>    D1313331322132333132333132312312323331323223313113313232233131112323   <<    D13133313221323331323331323123123233313232233131133132322331311123233   >>      D13133313221323331323331323123123233313232233131133132322331311123232   >>