C131121333133313233213331333133313331333133313331333133313121111121111122132321   >>    C13112133313331323321333133313331333133313331333133313331312111112111112213232   <<    C131121333133313233213331333133313331333133313331333133313121111121111122132323   >>      C131121333133313233213331333133313331333133313331333133313121111121111122132322   >>