C131121333133313233213331333133313331312111133133313232233233231   >>    C13112133313331323321333133313331333131211113313331323223323323   <<    C131121333133313233213331333133313331312111133133313232233233233   >>      C131121333133313233213331333133313331312111133133313232233233232   >>