C111123313121111121111331333133313331331121111113313331333133313331322223221   >>    C11112331312111112111133133313331333133112111111331333133313331333132222322   <<    C111123313121111121111331333133313331331121111113313331333133313331322223223   >>      C111123313121111121111331333133313331331121111113313331333133313331322223222   >>