C131121333133313233213331333133313331333133313331333133313123223212113313233321   >>    C13112133313331323321333133313331333133313331333133313331312322321211331323332   <<    C131121333133313233213331333133313331333133313331333133313123223212113313233323   >>      C131121333133313233213331333133313331333133313331333133313123223212113313233322   >>