C131121333133313233213331333133313331333133313331333133313331333133322312111   >>    C13112133313331323321333133313331333133313331333133313331333133313332231211   <<    C131121333133313233213331333133313331333133313331333133313331333133322312113   >>      C131121333133313233213331333133313331333133313331333133313331333133322312112   >>