C31232233133313221211113313331333133313332213121111113313123311   >>    C3123223313331322121111331333133313331333221312111111331312331   <<    C31232233133313221211113313331333133313332213121111113313123313   >>      C31232233133313221211113313331333133313332213121111113313123312   >>