#include
void sanjiao (char, int);
int main(void)
{
int n;
char ch;
while (scanf("%c", &ch) != EOF)
{
if (ch == '@')
{
break;
}
else
{
scanf("%d", &n);
sanjiao(ch,n);
}
}
return 0;
}
void sanjiao (char ch, int n)
{
int i, j, k=1, x, y, z, m;
char c;
if (k)
k=0;
else
putchar('\n');
for (i=1; i<=n-1; i++)
putchar(' ');
putchar(ch);
putchar('\n');
for (z=1; z<=n-2; z++)
{
for (x=z; x<=n-2;x++)
putchar(' ');
putchar(ch);
for (y=1; y<2*z; y++)
putchar(' ');
putchar(ch);
putchar('\n');
}
for (m=2*n-1;m>0; m--)
putchar(ch);
while (c=getchar()!='\n');
putchar('\n');
}