C111123313331323113313331333132313331311331312111133131323132322123311   >>    C11112331333132311331333133313231333131133131211113313132313232212331   <<    C111123313331323113313331333132313331311331312111133131323132322123313   >>      C111123313331323113313331333132313331311331312111133131323132322123312   >>