C3132121111133313233121111331333133313331333133313223313232212311   >>    C313212111113331323312111133133313331333133313331322331323221231   <<    C3132121111133313233121111331333133313331333133313223313232212313   >>      C3132121111133313233121111331333133313331333133313223313232212312   >>