C11112331312111112111133133313231333132313232233133313113311213111   >>    C1111233131211111211113313331323133313231323223313331311331121311   <<    C11112331312111112111133133313231333132313232233133313113311213113   >>      C11112331312111112111133133313231333132313232233133313113311213112   >>