C11231323321111331312111133133313331323223313231323133313232331331   >>    C1123132332111133131211113313331333132322331323132313331323233133   <<    C11231323321111331312111133133313331323223313231323133313232331333   >>      C11231323321111331312111133133313331323223313231323133313232331332   >>