C131121333133313233213331333133313331333133313331333133313331333113122332321   >>    C13112133313331323321333133313331333133313331333133313331333133311312233232   <<    C131121333133313233213331333133313331333133313331333133313331333113122332323   >>      C131121333133313233213331333133313331333133313331333133313331333113122332322   >>