uva 488

/************************
This is a problem that exams your  understand for "for control",i think
2013/10/12
yuzibode@126.com
**********************/
#include <iostream>
#include <fstream>
using namespace std;
int main()
{
// ifstream cin("in.txt");
int d,i,c,n,a,b,w;//TMD my var is too many!
cin>>d;
for(w=0;w<d;w++)//the number of blocks
{

cin>>n>>b;
//b is Frequency
for(a=0;a<b;a++)
{
//n is Ampliitude
for(i=1;i<=n;i++)
{
if(i==1&&a==0)
;
else
cout<<endl;
for(c=i;c>=1;c--)
cout<<i;
}
for(i=i-2;i>=1;i--)
{
cout<<endl;
for(c=i;c>=1;c--)
cout<<i;
}
cout<<endl;

}
if(w==d-1)
;
else
cout<<endl;

}

return 0;
}