Two string - using string.Contains function - simple

TwoString13.cs

using System;
using System.Collections.Generic;
using System.IO;
class Solution
{
    static void Main(String[] args)
    {
        //for (int i = 97; i < 123; i++)
        //    Console.WriteLine((char)i);
        //Console.ReadKey();
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution */
        int t = Convert.ToInt32(Console.ReadLine());
        for (int i = 0; i < t; i++)
        {
            string a = Console.ReadLine();
            string b = Console.ReadLine();
            bool printYES = false;
            for (int j = 97; j < 123; j++)
                if (a.Contains(((char)j).ToString()) && b.Contains(((char)j).ToString()))
                {
                    printYES = true;
                    break;
                }
            Console.WriteLine(printYES ? "YES" : "NO");
        }
        Console.ReadKey();
    }
}