C11231323321111331312111133133313331323223313231333131311331322231   >>    C1123132332111133131211113313331333132322331323133313131133132223   <<    C11231323321111331312111133133313331323223313231333131311331322233   >>      C11231323321111331312111133133313331323223313231333131311331322232   >>