C131121333133313233213331333133313331333132333133313331313122321   >>    C13112133313331323321333133313331333133313233313331333131312232   <<    C131121333133313233213331333133313331333132333133313331313122323   >>      C131121333133313233213331333133313331333132333133313331313122322   >>