#include <bits/stdc++.h>
using namespace std;
int main()
{
int a,f,tc,i,j,k,l,m,n;
scanf("%d",&tc);
while(tc--)
{
cin>>a;
cin>>f;
for(l=1;l<=f;l++)
{
for(i=1;i<=a;i++)
{
for(j=0;j<i;j++)
{
cout<<i;
}
cout<<"\n";
}
for(m=a-1;m>0;m--)
{
for(n=0;n<m;n++)
{
cout<<m;
}
cout<<"\n";
}
if(l != f) // excluding last one new line hobe
cout<<"\n";
}
if(tc)
cout<<"\n";
}
return 0;
}