C131121333133313233213331333133313331333133313231333131321333321   >>    C13112133313331323321333133313331333133313331323133313132133332   <<    C131121333133313233213331333133313331333133313231333131321333323   >>      C131121333133313233213331333133313331333133313231333131321333322   >>