public class Solution {
    public static List<String> words = new ArrayList<String>();

    static {
        words.add("А");
        words.add("Б");
        words.add("В");
    }

    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in, "UTF-8"));
        FileReader file = new FileReader(reader.readLine());
        reader.close();
        StringBuilder bigS = new StringBuilder();
        int count = 0;

        while (file.ready()) {
            int data = file.read();
            bigS.append((char) data);
        }
        file.close();
        String[] splitFile = bigS.toString().split("\n");

        for(String s : splitFile) {
            for(String word : words) {
                Pattern pattern = Pattern.compile(word);
                Matcher matcher = pattern.matcher(s);
                while(matcher.find()) count++;

            }
            if(count == 2) System.out.println(s);
            count = 0;
        }

    }
}