TagReplace

/***
            Author          :   Shakib Haris
            Started On      :   15 January, 2017
*/

using System;

class Program {
    public static void Main (string[] args) {
        string tag;
        string rep, repCopy;
        string line, lineCopy;
        int end, idx;

        while ((tag = Console .ReadLine ( )) != null) {
            tag = tag .ToLower ( );
            rep = Console .ReadLine ( );
            repCopy = rep .ToLower ( );
            line = Console .ReadLine ( );
            lineCopy = line .ToLower ( );

            for (int i = 0; i < line .Length; i++) {
                if (lineCopy[i] == '<') {
                    end = lineCopy .IndexOf ('>', i);

                    idx = lineCopy .IndexOf (tag, i);
                    while (idx != -1 && idx < end) {
                        lineCopy = lineCopy .Substring (0, idx) + repCopy + lineCopy .Substring (idx + tag .Length);
                        line = line .Substring (0, idx) + rep + line .Substring (idx + tag .Length);

                        end = lineCopy .IndexOf ('>', i);
                        idx = lineCopy .IndexOf (tag, i);
                    }
                }
            }
            Console .WriteLine (line);
        }
    }
}