C :

#include<stdio.h>
#include<string.h>
int main()
{int i,n;
 char k[3000];
 static char a[4]="one",b[4]="two",c[6]="three",d[5]="four",e[5]="five",f[4]="six",g[6]="seven"; 
 scanf("%d",&n);
 for(i=0;i<n;i++)
 { scanf("%s",k);
   if(strstr(k,a)!=0&&strstr(k,b)!=0&&strstr(k,c)!=0&&strstr(k,d)!=0&&strstr(k,e)!=0&&strstr(k,f)!=0&&strstr(k,g)!=0)
	   printf("Yes\n");
   else
	   printf("No\n");
 }
 return 0;
}

C++ :

#include <stdio.h>
#include <string.h>
#include <fstream>
#include <iostream>
using namespace std;

int main(void)
{
    int n;
    /*ifstream cin;
    ofstream cout;
    cin.open("b.in");
    cout.open("b.out");*/
    cin>>n;
    while(n--)
    {
        string s;
        int x1=0,x2=0,x3=0,x4=0,x5=0,x6=0,x7=0,sum=0,i;
        cin>>s;
        for(i=0;i<s.length();i++)
        if(i+2<s.length()&&s[i]=='o'&&s[i+1]=='n'&&s[i+2]=='e'&&x1==0) {x1=1;sum++;}
        else if(i+2<s.length()&&s[i]=='t'&&s[i+1]=='w'&&s[i+2]=='o'&&x2==0) {x2=1;sum++;}
        else if(i+4<s.length()&&s[i]=='t'&&s[i+1]=='h'&&s[i+2]=='r'&&s[i+3]=='e'&&s[i+4]=='e'&&x3==0) {x3=1;sum++;}
        else if(i+3<s.length()&&s[i]=='f'&&s[i+1]=='o'&&s[i+2]=='u'&&s[i+3]=='r'&&x4==0) {x4=1;sum++;}
        else if(i+3<s.length()&&s[i]=='f'&&s[i+1]=='i'&&s[i+2]=='v'&&s[i+3]=='e'&&x5==0) {x5=1;sum++;}
        else if(i+2<s.length()&&s[i]=='s'&&s[i+1]=='i'&&s[i+2]=='x'&&x6==0) {x6=1;sum++;}
        else if(i+4<s.length()&&s[i]=='s'&&s[i+1]=='e'&&s[i+2]=='v'&&s[i+3]=='e'&&s[i+4]=='n'&&x7==0) {x7=1;sum++;}
        if(sum==7)
            cout<<"Yes"<<endl;
        else
            cout<<"No"<<endl;
    }
    return 0;
}

Java :

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner reader=new Scanner(System.in);
		int T=reader.nextInt();
		Main t=new Main();
		for(int i=0;i<T;i++){
			String s=reader.next();
			if(t.se(s)) System.out.println("Yes");
			else System.out.println("No");
		}
	}
	public boolean se(String s){
		int i1=s.indexOf("one");
		int i2=s.indexOf("two");
		int i3=s.indexOf("three");
		int i4=s.indexOf("four");
		int i5=s.indexOf("five");
		int i6=s.indexOf("six");
		int i7=s.indexOf("seven");
		if(i1>=0&&i2>=0&&i3>=0&i4>=0&&i5>=0&i6>=0&i7>=0)
		return true;
		else return false;
	}
}