C111123313331323113313331333133313331323112133313331333121111122331311   >>    C11112331333132311331333133313331333132311213331333133312111112233131   <<    C111123313331323113313331333133313331323112133313331333121111122331313   >>      C111123313331323113313331333133313331323112133313331333121111122331312   >>