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    java solution

    import java.io.*;
    import java.util.*;
    import java.util.regex.Pattern;
    import java.util.regex.Matcher;
    
    public class Solution {
    
        public static void main(String[] args) {
            Scanner scanner = new Scanner(System.in);
            Pattern pattern = Pattern.compile("^hi (?!d).*", Pattern.CASE_INSENSITIVE);
            int n = Integer.parseInt(scanner.nextLine());
            for (int i = 0; i < n; i++) {
                Matcher matcher = pattern.matcher(scanner.nextLine());
                if (matcher.matches()) System.out.println(matcher.group(0));
            }
        }
    }