#include
int main(void)
{
int i,j,n;
while(scanf("%d",&n)!=EOF)
{
for(i=0;i{
for(j=0;j{
putchar('A'+(i+j)%26);
}
putchar('\n');
}
}
return 0;
}
#include
int main(void)
{
int i,j,n;
while(scanf("%d",&n)!=EOF)
{
for(i=0;i{
for(j=0;j{
putchar('A'+(i+j)%26);
}
putchar('\n');
}
}
return 0;
}