C131121333133313233213331333133313331333133331211113313331322223313232233311   >>    C13112133313331323321333133313331333133313333121111331333132222331323223331   <<    C131121333133313233213331333133313331333133331211113313331322223313232233313   >>      C131121333133313233213331333133313331333133331211113313331322223313232233312   >>