C11112331312111112111133133313331333133313123313331311331211113313331323233111   >>    C1111233131211111211113313331333133313331312331333131133121111331333132323311   <<    C11112331312111112111133133313331333133313123313331311331211113313331323233113   >>      C11112331312111112111133133313331333133313123313331311331211113313331323233112   >>