C131121333133313233213331333133313331333131133133313231333133322331   >>    C13112133313331323321333133313331333133313113313331323133313332233   <<    C131121333133313233213331333133313331333131133133313231333133322333   >>      C131121333133313233213331333133313331333131133133313231333133322332   >>