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

namespace ZnanijaCSharp
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Title = "Task";

            string          strOne = Console.ReadLine(),
                            strTwo = Console.ReadLine();
            char            symbol = char.Parse(Console.ReadLine());
            uint            value  = 0;
            List<string>    arr    = new List<string>();

            if(strOne.Length > 100 && strTwo.Length > 100)
            {
                Environment.Exit(1);
            }

            addToArray(strOne, ref arr);
            arr = getResult(ref arr, ref value, symbol);
            outPutArr(ref arr);

            value = 0;

            addToArray(strTwo, ref arr);
            arr = getResult(ref arr, ref value, symbol);
            outPutArr(ref arr);

            Console.ReadKey();
        }
        static void addToArray(string str, ref List<string> arr)
        {
            arr = str.Split(' ').ToList();
        }
        static List<string> getResult(ref List<string> arr, ref uint value, char symbol)
        {
            List<string> arrNew = new List<string>();

            for (int i = 0; i < arr.Count; i++)
            {
                if (arr[i][0] == symbol && arr[i][arr[i].Length - 1] == symbol)
                {
                    arrNew.Add(arr[i]);
                    value++;
                }
            }
            Console.WriteLine("Количество слов: {0}", value);

            return arrNew;
        }
        static void outPutArr(ref List<string> arr)
        {
            for (int i = 0; i < arr.Count; i++)
            {
                Console.WriteLine(arr[i]);
            }
        }
    }
}