#include <bits/stdc++.h>
using namespace std;
using ull = uint64_t;
using ll = int64_t;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define N4(f)	\
	f(0,1)	\
	f(0,-1)	\
	f(1,0)	\
	f(-1,0)
#define N8(f)	\
	f(y+1,x+1)	\
	f(y+1,x+0)	\
	f(y+1,x-1)	\
	f(y+0,x+1)	\
	f(y+0,x-1)	\
	f(y-1,x+1)	\
	f(y-1,x+0)	\
	f(y-1,x-1)
#define N9(f)	\
	f(y+1,x+1)	\
	f(y+1,x+0)	\
	f(y+1,x-1)	\
	f(y+0,x+1)	\
	f(y+0,x+0)	\
	f(y+0,x-1)	\
	f(y-1,x+1)	\
	f(y-1,x+0)	\
	f(y-1,x-1)

signed main() {
	int n,m;cin>>n>>m;
	vector<int> v(m);
	rep(i,n) {
		string s;cin>>s;
		rep(j,m) {
			if(s[j]=='#') {
				v[j]++;
			}
		}
	}
	sort(v.begin(),v.end(),greater<int>{});
	vector<int>vv(n);
	rep(i,m) {
		rep(j,v[i]) {
			vv[j]++;
		}
	}
	rep(i,n) {
		rep(j,vv[i])cout<<'#';
		rep(j,m-vv[i])cout<<'.';
		cout<<'\n';
	}
	cout<<flush;
}