#include <bits/stdc++.h>
#include <atcoder/all>

using namespace std;
using ll = long long;
#define rep(i, s, t) for (ll i = s; i < (ll)(t); i++)
#define all(x) begin(x), end(x)
template <class T> bool chmin(T& x, T y) {
	return x > y ? (x = y, true) : false;
}
template <class T> bool chmax(T& x, T y) {
	return x < y ? (x = y, true) : false;
}

void solve() {
	int h, w;
	cin >> h >> w;
	vector<string> s(h);
	rep(i, 0, h) cin >> s[i];
	vector<int> sn(w);
	rep(i, 0, h) rep(j, 0, w) if (s[i][j] == '#') sn[j]++;
	sort(all(sn));
	reverse(all(sn));
	vector<string> ans(h, string(w, '.'));
	rep(j, 0, w) {
		rep(i, 0, sn[j]) ans[i][j] = '#';
	}
	rep(i, 0, h) cout << ans[i] << '\n';
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	cout << fixed << setprecision(15);
	int t = 1;
	// cin >> t;
	while (t--) solve();
}