import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import com.epam.hushchyn.ReadFile;

public class Part3 {

    public static String regex1 = "[A-Za-zА-Яа-яЁё]+";

    static Pattern pt = Pattern.compile(regex1);

    public static String regex2 = "(\\d?\\S?\\d+)+";

    static Pattern pt2 = Pattern.compile(regex2);

    static Matcher matcher = null;

    /**
     * Constructor.
     */
    public Part3() {

    }

    /**
     * @param args
     * @throws IOException
     */
    public static void main(String[] args) throws IOException {

        Scanner in = new Scanner(System.in);
        System.out.println(": char, String, int, double, or stop");
        String switchvar = null;
        while ((switchvar = in.nextLine()).equals("stop") == false) {
            System.out.println(part3(switchvar));
            System.out.println("tyr");
        }

    }

    /**
     * @param switchvar
     * @return
     * @throws IOException
     */
    public static String part3(String switchvar)
            throws IOException, NullPointerException {
        String s = ReadFile.read("part3.txt", "Cp1251");
        StringBuilder stringBuilder = new StringBuilder();
        switch (switchvar) {
        case "char":
            matcher = pt.matcher(s);
            while (matcher.find()) {
                if (matcher.group().length() == 1) {
                    stringBuilder.append(matcher.group(0) + " ");
                }
            }
            break;

        case "String":
            matcher = pt.matcher(s);
            while (matcher.find()) {
                if (matcher.group().length() > 1) {
                    stringBuilder.append(matcher.group(0) + " ");
                }
            }
            break;
        case "int":
            matcher = pt2.matcher(s);
            while (matcher.find()) {
                if (matcher.group().contains(".") == false) {

                    stringBuilder.append(matcher.group(0) + " ");
                }
            }
            break;
        case "double":
            matcher = pt2.matcher(s);
            while (matcher.find()) {
                if (matcher.group().contains(".")) {

                    stringBuilder.append(matcher.group(0) + " ");
                }
            }
            break;
        default:
            stringBuilder.append("error");
            break;
        }
        return stringBuilder.toString();
    }
}