C :

#include<stdio.h>
#include<string.h>
 
char tw[4][15]={"bowl","knife","fork","chopsticks"};
 
int main()
{
	int n,i,c;
	char s[15];
	while(scanf("%d",&n)!=EOF)
	{
		c=0;
		while(n--)
		{
			scanf("%s",s);
			for(i=0;i<4;i++)
				if(!strcmp(s,tw[i]))
				{
					c++;
					if(c==1)
						printf("%s",s);
					else
						printf(" %s",s);
					break;
				}
		}
		printf("\n");
	}
	return 0;
}

C++ :

#include<stdio.h>
#include<string.h>
 
char tw[4][15]={"bowl","knife","fork","chopsticks"};
 
int main()
{
	int n,i,c;
	char s[15];
	while(scanf("%d",&n)!=EOF)
	{
		c=0;
		while(n--)
		{
			scanf("%s",s);
			for(i=0;i<4;i++)
				if(!strcmp(s,tw[i]))
				{
					c++;
					if(c==1)
						printf("%s",s);
					else
						printf(" %s",s);
					break;
				}
		}
		printf("\n");
	}
	return 0;
}

Pascal :

program p1046;
var st,s:string;
    i,j,k,n:longint;
begin
  while not eof do
    begin
          readln(st);
          k:=pos(' ',st);
	  val(copy(st,1,k-1),n);
	  delete(st,1,k);
	  st:=st+' ';
	  j:=0;
	  for i:=1 to n do
	    begin
		  k:=pos(' ',st);
		  s:=copy(st,1,k-1);
		  if (s='bowl') or (s='knife') or (s='fork') or(s='chopsticks') then
		   if j=0 then begin write(s); j:=j+1; end
		   else write(' ',s);
		  delete(st,1,k);
		end;
	  writeln;
    end;
end.

Java :

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		final String[] cooks = {"bowl", "knife", "fork", "chopsticks"};
		while(in.hasNext()){
			int n = in.nextInt();
			String[] ss = new String[n];
			StringBuffer sb = new StringBuffer();
			for(String s:ss){
				s = in.next();
				for(String tem:cooks)
					if(s.equals(tem))
						sb.append(" ").append(s);
			}
			System.out.println(sb.toString().substring(1));
		}
		
		
		
	}

}

Python :

import sys
T = ['bowl','knife','fork','chopsticks']
for line in sys.stdin:
    data = line.split()
    B=map(lambda x:x if x in T else '',data)
    print (' '.join([i for i in B])).strip()
 

C# :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string str;
            while ((str=Console.ReadLine())!=null)
            {
                
                string[] ans = str.Split(' ');
                string mtr = string.Empty;
                for (int i = 1; i < ans.Length; i++)
                {
                    if (ans[i] == "bowl" || ans[i] == "fork" || ans[i] == "chopsticks"
                        || ans[i] == "knife")
                    {
                        if (mtr == "")
                        {
                            mtr += ans[i];
                        }
                        else mtr += " " + ans[i];
                    }
                }
                Console.WriteLine(mtr);
            }
        }
    }
}