import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.NoSuchElementException;


public class Main{
	public static void main(String[] args) {
		FastScanner sc = new FastScanner();
		PrintWriter out = new PrintWriter(System.out);
		int h = sc.nextInt();
		int w = sc.nextInt();
		List<StringBuilder> sbList = new ArrayList<>();
		for(int i = 0; i < h ; i++) {
			sbList.add(new StringBuilder(sc.next()));
		}
		
		boolean delete = true;			
		while(delete) {
			delete = false;
			//行走査
			for(int i = 0; i < sbList.size();i++) {
				boolean isWhite = true;
				StringBuilder sb = sbList.get(i);
				for(int j = 0; j < sb.length(); j++) {
					if (sb.charAt(j) == '#') {
						isWhite = false;
						break;
					}	
				}
				if(isWhite) {
					delete = true;
					sbList.remove(i);
				}
			if(isWhite)
				break;
			}
			if(delete)continue;
			//列走査
			for(int i = 0; i < sbList.get(0).length(); i++) {
				boolean isWhite = true;
				for(int j = 0; j < sbList.size(); j++) {
					if (sbList.get(j).charAt(i) == '#') {
						isWhite = false;
						break;
					}
				}
				if(isWhite) {
					delete = true;
					for(int k = 0; k < sbList.size(); k++) {
						sbList.get(k).deleteCharAt(i);
					}
				}
			if(isWhite)
				break;
			}
		}
				
		
		for(StringBuilder sb: sbList)
			out.println(sb);
		
		out.close();
	}

	static class FastScanner {
	    private final InputStream in = System.in;
	    private final byte[] buffer = new byte[1024];
	    private int ptr = 0;
	    private int buflen = 0;
	    private boolean hasNextByte() {
	        if (ptr < buflen) {
	            return true;
	        }else{
	            ptr = 0;
	            try {
	                buflen = in.read(buffer);
	            } catch (IOException e) {
	                e.printStackTrace();
	            }
	            if (buflen <= 0) {
	                return false;
	            }
	        }
	        return true;
	    }
	    private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
	    private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
	    public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();}
	    public String next() {
	        if (!hasNext()) throw new NoSuchElementException();
	        StringBuilder sb = new StringBuilder();
	        int b = readByte();
	        while(isPrintableChar(b)) {
	            sb.appendCodePoint(b);
	            b = readByte();
	        }
	        return sb.toString();
	    }
	    public long nextLong() {
	        if (!hasNext()) throw new NoSuchElementException();
	        long n = 0;
	        boolean minus = false;
	        int b = readByte();
	        if (b == '-') {
	            minus = true;
	            b = readByte();
	        }
	        if (b < '0' || '9' < b) {
	            throw new NumberFormatException();
	        }
	        while(true){
	            if ('0' <= b && b <= '9') {
	                n *= 10;
	                n += b - '0';
	            }else if(b == -1 || !isPrintableChar(b)){
	                return minus ? -n : n;
	            }else{
	                throw new NumberFormatException();
	            }
	            b = readByte();
	        }
	    }
	    public int nextInt() {
	        long nl = nextLong();
	        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
	        return (int) nl;
	    }
	    public double nextDouble() { return Double.parseDouble(next());}
	}
}





Measured memory_bytes: 23764