C111123313121111121111331333133313331323231333133313331333131133132313221312121   >>    C11112331312111112111133133313331333132323133313331333133313113313231322131212   <<    C111123313121111121111331333133313331323231333133313331333131133132313221312123   >>      C111123313121111121111331333133313331323231333133313331333131133132313221312122   >>