C111123313121111121111331333133313331133132313331311331323233313112121   >>    C11112331312111112111133133313331333113313231333131133132323331311212   <<    C111123313121111121111331333133313331133132313331311331323233313112123   >>      C111123313121111121111331333133313331133132313331311331323233313112122   >>