C11231323321111331312111133133313331323223313231323132313231231   >>    C1123132332111133131211113313331333132322331323132313231323123   <<    C11231323321111331312111133133313331323223313231323132313231233   >>      C11231323321111331312111133133313331323223313231323132313231232   >>