#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
int main()
{
ll H;
int N,T;
cin >> T;
while(T--)
{
cin >> H >> N;
for(int i = 0;i<N-1;i++)
{
cout << 2*H << " ";
}
cout << 3*H << endl;
}
return 0;
}
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