C131121333133313233213331333133313331333133313331333133313121111333132311   >>    C13112133313331323321333133313331333133313331333133313331312111133313231   <<    C131121333133313233213331333133313331333133313331333133313121111333132313   >>      C131121333133313233213331333133313331333133313331333133313121111333132312   >>