C111123313331323113313331333133313331323133121111331313231323331313233311   >>    C11112331333132311331333133313331333132313312111133131323132333131323331   <<    C111123313331323113313331333133313331323133121111331313231323331313233313   >>      C111123313331323113313331333133313331323133121111331313231323331313233312   >>