/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		char letter = 'a';
		for ( int i = 0; i < 35; i ++ )
		{
			System.out.print ( letter );
			letter ++;//= (char) ( ( (int)letter + 1 ) % 26 )  ;
			if ( i % 10 == 0 )
			System.out.println( );
			if ( letter > 'z' ) 
			   letter = 'a';
		}
	}
}

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