/* 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{
        char ch1 = 'a', ch2 = 'z';
        int charsPerLine = 5;
 
        for (int c = ch1 + 1; c < ch2; c++)
            System.out.print( (char) c + ((c - ch1)%charsPerLine == 0 ? "\n":" "));
	}
}

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