C111123313121111121111331333133313331333133313331333133313331311331323212121   >>    C11112331312111112111133133313331333133313331333133313331333131133132321212   <<    C111123313121111121111331333133313331333133313331333133313331311331323212123   >>      C111123313121111121111331333133313331333133313331333133313331311331323212122   >>