#include <iostream>
using namespace std;
#include <vector>
#define vi vector<int>
#define ll long long
#include <algorithm>
#include <set>
#include <string>
#include <bitset>
#include <cmath>
#include <math.h>
#define pll pair<ll,ll>
#define vll vector<ll>
#define pi pair<int,int>
#include <map>
#include <queue>
#define x first
#define y second
#define pd pair<double,double>

int n, s, t;
vector<vi> v;

void solve(vector<pi>&ed) {
	int m = ed.size();
	vector<vector<pi>> fr(t+2);
	vi it(t + 2);
	for (int i = 0; i < m; i++) {
		fr[ed[i].x].push_back({ ed[i].y,i });
		fr[ed[i].y].push_back({ ed[i].x,i });
	}
	for (int i = 1; i <= t; i++) {
		if ((fr[i].size()) % 2) {
			fr[i].push_back({ t + 1,ed.size()});
			fr[t + 1].push_back({ i,ed.size() });
			ed.push_back({ i,t + 1 });
		}
	}
	vi vis(ed.size());
	queue<int> q;
	for (int i = 1; i <= t + 1; i++)q.push(i);
	while (!q.empty()) {
		int i = q.front();
		q.pop();
		while (it[i] < fr[i].size()) {
			int e = fr[i][it[i]].y;
			if (vis[e])it[i]++;
			else {
				vis[e] = 1;
				if (ed[e].x != i) {
					swap(ed[e].x, ed[e].y);
				}

				it[i]++;
				if (it[i] < fr[i].size())q.push(i);
				i = fr[i][it[i] - 1].x;
			}
		}
	}
}

void rec(int l, int r) {
	if (l == r)return;
	int mid = (l + r) / 2;
	vector<pi> ed;
	for (int j = l; j <= mid; j++) {
		for (int i = 0; i < n; i++) {
			ed.push_back({ v[i][j],v[i][2 * mid - j+1] });
		}
	}
	solve(ed);
	for (int j = l; j <= mid; j++) {
		for (int i = 0; i < n; i++) {
			if (v[i][j] != ed[(j-l) * n + i].x) {
				swap(v[i][j], v[i][2 * mid - j+1]);
			}
		}
	}
	rec(l, mid);
	rec(mid+1, r);
}
int main()
{
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	cin >> n >> s >> t;
	v.resize(n, vi(s));
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < s; j++) {
			cin >> v[i][j];
		}
	}
	rec(0, s - 1);
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < s; j++) {
			cout << v[i][j];
			if (j < s - 1)cout << ' ';
		}
		if(i<n-1)cout << "\n";
	}
}

// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
// Debug program: F5 or Debug > Start Debugging menu

// Tips for Getting Started: 
//   1. Use the Solution Explorer window to add/manage files
//   2. Use the Team Explorer window to connect to source control
//   3. Use the Output window to see build output and other messages
//   4. Use the Error List window to view errors
//   5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project
//   6. In the future, to open this project again, go to File > Open > Project and select the .sln file