C131121333133313233213331333133313331333133313331333133313123223212113313233131   >>    C13112133313331323321333133313331333133313331333133313331312322321211331323313   <<    C131121333133313233213331333133313331333133313331333133313123223212113313233133   >>      C131121333133313233213331333133313331333133313331333133313123223212113313233132   >>