C11231323321111331312111133133313331323223313231323133313133231   >>    C1123132332111133131211113313331333132322331323132313331313323   <<    C11231323321111331312111133133313331323223313231323133313133233   >>      C11231323321111331312111133133313331323223313231323133313133232   >>