C111123313331323113313331333133313331323132333131133131121132211   >>    C11112331333132311331333133313331333132313233313113313112113221   <<    C111123313331323113313331333133313331323132333131133131121132213   >>      C111123313331323113313331333133313331323132333131133131121132212   >>