C11112331312111112111133133313331333132112312111113232233131331   >>    C1111233131211111211113313331333133313211231211111323223313133   <<    C11112331312111112111133133313331333132112312111113232233131333   >>      C11112331312111112111133133313331333132112312111113232233131332   >>