C111123313121111121111331333133313331333132232233131211111133132313131   >>    C11112331312111112111133133313331333133313223223313121111113313231313   <<    C111123313121111121111331333133313331333132232233131211111133132313133   >>      C111123313121111121111331333133313331333132232233131211111133132313132   >>