C11112331312111112111133133313331333133313331333133313331211113313232313111121   >>    C1111233131211111211113313331333133313331333133313331333121111331323231311112   <<    C11112331312111112111133133313331333133313331333133313331211113313232313111123   >>      C11112331312111112111133133313331333133313331333133313331211113313232313111122   >>