package exercise_java;


import java.io.*;
import static java.lang.System.out; 

public class writeAlphabet {
	public static void main(String[] args) {
		try{
			InputStreamReader is_reader = new InputStreamReader(System.in);
			int str = new BufferedReader (is_reader).read();
			
			char aStr = (char)str;
			
			
			
			if(aStr<'z')
			{
				for(char start =aStr; start<='z';start++)
					out.println(start);
			}
			else
			{
				for(char start = aStr; start<='Z';start++)
					out.println(start);
			}
				
		}catch(IOException e){
			e.printStackTrace();
		}
		
		
	}

}