/* ano, kato trigonika sximata */ 
#include <iostream> 
#include <cstdlib>

using namespace std;

int main(int argc, char *argv[])
{  int i, j, k;
   /* A */
   for (i = 1; i <= 10; i++) {
      for (j = 1; j <= i; j++)
         cout<<"*";
      cout<<"\n";
   }
   cout<<"\n";

   /* B */
   for (i = 10; i >= 1; i--) {
      for (j = 1; j <= i; j++)
         cout<<"*";
      cout<<"\n";
   }
   cout<<"\n";

   /* C */
   for (i = 10; i >= 1; i--) {
      for (k = 1; k <= (10-i); k++)
         cout<<" ";
      for (j = 1; j <= i; j++)
         cout<<"*";
      cout<<"\n";
   }
   cout<<"\n";

   /* D */
   for (i = 1; i <= 10; i++) {
      for (k = 1; k <= (10-i); k++)
         cout<<" ";
      for (j = 1; j <= i; j++)
         cout<<"*";
      cout<<"\n";
   }
   cout<<"\n";
   
   system("PAUSE");
   return 0;
}