import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.HashSet;

/*

ID: mryuan01

LANG: JAVA

TASK: namenum

*/

public class namenum {

public static String[] map = {"", "", "ABC", "DEF","GHI", "JKL","MNO","PRS","TUV","WXY"};

private static HashSet<String> hs = new HashSet<String>();

public static boolean found = false;

static{

try {

BufferedReader f = new BufferedReader(new FileReader("dict.txt"));

String key = null;

while((key = f.readLine()) != null){

hs.add(key.trim());

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

public static void findName(String num, int start, StringBuffer sb, PrintWriter out){

if(start == num.length()){

String name = sb.toString();

if(hs.contains(name)){

out.println(name);

found = true;

}

return ;

}

int len = sb.length();

String s1 = map[num.charAt(start) - '0'];

for(int i = 0; i < s1.length(); i++ ){

sb.append(s1.charAt(i));

findName(num, start+1, sb, out);

sb.deleteCharAt(len);

}

}

public static void main (String [] args) throws IOException {

// Use BufferedReader rather than RandomAccessFile; it's much faster

BufferedReader f = new BufferedReader(new FileReader("namenum.in"));

// input file name goes above

PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("namenum.out")));

// Use StringTokenizer vs. readLine/split -- lots faster

String s = f.readLine().trim();

StringBuffer sb = new StringBuffer();

findName(s, 0, sb, out);

if(!found){

out.println("NONE");

}

out.close();

}

}