C3123121111113313121111331333133313223313331333133313223313231123311   >>    C312312111111331312111133133313331322331333133313331322331323112331   <<    C3123121111113313121111331333133313223313331333133313223313231123313   >>      C3123121111113313121111331333133313223313331333133313223313231123312   >>