C131121333133313233213331333133313331333133313113313331211111322332311   >>    C13112133313331323321333133313331333133313331311331333121111132233231   <<    C131121333133313233213331333133313331333133313113313331211111322332313   >>      C131121333133313233213331333133313331333133313113313331211111322332312   >>