C111123313331323113313331333133313331323132311233133313232223233311   >>    C11112331333132311331333133313331333132313231123313331323222323331   <<    C111123313331323113313331333133313331323132311233133313232223233313   >>      C111123313331323113313331333133313331323132311233133313232223233312   >>