C111123313331323113313331333132313331311331312111133133313112233123231   >>    C11112331333132311331333133313231333131133131211113313331311223312323   <<    C111123313331323113313331333132313331311331312111133133313112233123233   >>      C111123313331323113313331333132313331311331312111133133313112233123232   >>