C111123313331323113313331333133313331323123231333133313231333133313332321311   >>    C11112331333132311331333133313331333132312323133313331323133313331333232131   <<    C111123313331323113313331333133313331323123231333133313231333133313332321313   >>      C111123313331323113313331333133313331323123231333133313231333133313332321312   >>