C111123313121111121111331333133313331331121111113313331333133313331323211221   >>    C11112331312111112111133133313331333133112111111331333133313331333132321122   <<    C111123313121111121111331333133313331331121111113313331333133313331323211223   >>      C111123313121111121111331333133313331331121111113313331333133313331323211222   >>