import java.io.*;
import java.util.*;

public class changeFile{
	public static void main(String[] args) throws IOException{
	//writes contents of inputFile to outputFile, replaces all 'g' characters with 't'
		String inputFile = args[0];
		String outputFile = args[1];
		String output = new String();
		BufferedReader reader = new BufferedReader(new FileReader(inputFile));
		String temp;
		while((temp = reader.readLine()) != null){
			for(int x = 0; x < temp.length(); x++){
				char c = temp.charAt(x);
				if(c == 'g')
					c = 't';
				output += c;
			}
			output += '\n';
		}
		reader.close();
		/*Scanner sc = new Scanner(new File(inputFile));
		while(sc.hasNextLine()){
			String temp = sc.nextLine();
			for(int x = 0; x < temp.length(); x++){
				char c = temp.charAt(x);
				if(c == 'g')
					c = 't';
				output += c;
			}
			output += '\n';
		}*/
		BufferedWriter writer = new BufferedWriter(new FileWriter(outputFile));
		writer.write(output);
		writer.close();
	}
}