C11231323321111331312111133133313331323223313231333131121333131   >>    C1123132332111133131211113313331333132322331323133313112133313   <<    C11231323321111331312111133133313331323223313231333131121333133   >>      C11231323321111331312111133133313331323223313231333131121333132   >>