C111123313331323113313331333132313331311331312111113331322233232311   >>    C11112331333132311331333133313231333131133131211111333132223323231   <<    C111123313331323113313331333132313331311331312111113331322233232313   >>      C111123313331323113313331333132313331311331312111113331322233232312   >>