C111123313121111121111331333133313331333131233133313331312111133131133132231231   >>    C11112331312111112111133133313331333133313123313331333131211113313113313223123   <<    C111123313121111121111331333133313331333131233133313331312111133131133132231233   >>      C111123313121111121111331333133313331333131233133313331312111133131133132231232   >>