import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class matura18v3 {
	static List<String> dane = new ArrayList<String>();
	static List<Character> abc = new ArrayList<Character>();
	static Scanner scanner;
	static List<String> wynik = new ArrayList<String>();

	static void intalize() {
		  try {
			scanner = new Scanner(new File("C:\\Users\\mee\\Desktop\\Dane_PR2\\sygnaly.txt"));
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	      while (scanner.hasNextLine()) {
	        dane.add(scanner.nextLine());
	      }
	      for(char ch='A';ch<='Z';ch++) abc.add(ch);


	}


	//*** c':


	public static void main(String[] args) {
		intalize();
		for(String s : dane) {
			Boolean d = true;
			for(int j=0;j<s.length();j++) {
				for(int k=0;k<s.length();k++) {
					if(dlugosc(s.charAt(j), s.charAt(k))>10) {
						d = false;
					}
				}
			}
			if(d)wynik.add(s);

		}
		for(String s : wynik) System.out.println(s+"\n");
		//System.out.println(dlugosc('C','G'));
	}
	static int dlugosc(char a, char b) {
		return Math.abs(a-b);
	}


}