C1311213331333132332133313331333133313331333133313133311232333112121   >>    C131121333133313233213331333133313331333133313331313331123233311212   <<    C1311213331333132332133313331333133313331333133313133311232333112123   >>      C1311213331333132332133313331333133313331333133313133311232333112122   >>