C13112133313331323321333133313331333133313331311331323221121133132311212331   >>    C1311213331333132332133313331333133313331333131133132322112113313231121233   <<    C13112133313331323321333133313331333133313331311331323221121133132311212333   >>      C13112133313331323321333133313331333133313331311331323221121133132311212332   >>