C131121333133313233213331333133313331333132333133313331311211312321   >>    C13112133313331323321333133313331333133313233313331333131121131232   <<    C131121333133313233213331333133313331333132333133313331311211312323   >>      C131121333133313233213331333133313331333132333133313331311211312322   >>