#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
 
 
 
void solve() {
        int n,m,k;
        cin >> n >> m >> k;
        int q=(m%k)?(m%k):1,curr;
        for(int i=0;i<n;i++){
            for(int j=0;j<m;j++){
                curr=((j+q*i)%k)+1;
                cout << curr << " ";
            }
            cout << "\n";
        }
}
 
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
 
    int t;
    cin >> t;
    while (t--) solve();
 
    return 0;
}

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MwoyIDIgMgozIDQgNgo1IDUgMjUK

3
2 2 2
3 4 6
5 5 25