/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import static java.lang.Math.*;
 
class Ideone 
{
	public static void main (String[] args){
                Scanner sc = new Scanner(System.in);
                int m,n,k;
                m = sc.nextInt();
                n = sc.nextInt();
                k = sc.nextInt();
                for (int i = 0; i < m; i++){
                     for (int j = 0; j < n; j++){
                             if (i%6 == 0) 
                                  System.out.print("+");
                             else if (j%(k+1) == 0) 
                                  System.out.print("+");
                             else 
                                  System.out.print(".");
                     }
                     System.out.println(" ");
                }
	}
}

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MTMKMzEKOQ==

13
31
9