C11112331312111112111133133313331333133313123313331323221312211331   >>    C1111233131211111211113313331333133313331312331333132322131221133   <<    C11112331312111112111133133313331333133313123313331323221312211333   >>      C11112331312111112111133133313331333133313123313331323221312211332   >>