C111123313121111121111331333133313331333131121133133313331333133313222212121   >>    C11112331312111112111133133313331333133313112113313331333133313331322221212   <<    C111123313121111121111331333133313331333131121133133313331333133313222212123   >>      C111123313121111121111331333133313331333131121133133313331333133313222212122   >>