C131121333133313233213331333133313331333133313331333132112312232131123231   >>    C13112133313331323321333133313331333133313331333133313211231223213112323   <<    C131121333133313233213331333133313331333133313331333132112312232131123233   >>      C131121333133313233213331333133313331333133313331333132112312232131123232   >>