C3132121111133313233121111331333133313331333133313331333132333133313232223131   >>    C313212111113331323312111133133313331333133313331333133313233313331323222313   <<    C3132121111133313233121111331333133313331333133313331333132333133313232223133   >>      C3132121111133313233121111331333133313331333133313331333132333133313232223132   >>