C111123313121111121111331333133313331333132232233131211111213311211   >>    C11112331312111112111133133313331333133313223223313121111121331121   <<    C111123313121111121111331333133313331333132232233131211111213311213   >>      C111123313121111121111331333133313331333132232233131211111213311212   >>