C131121333133313233213331333133313331333133313133313331311213232332131211   >>    C13112133313331323321333133313331333133313331313331333131121323233213121   <<    C131121333133313233213331333133313331333133313133313331311213232332131213   >>      C131121333133313233213331333133313331333133313133313331311213232332131212   >>