/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String str = " <play> a < b  <play> at < button >\n <play> a < 90 <play> at < button >\nhgsf a< sjdfvh> dasjfh a>jsdhf a<fan> a< button and > sjf";
		//str = str.replaceAll("(\\w+)\\s*<\\s*(\\w++(?!\\s*>))", "$1 less than $2");
    	//System.out.println(str);
    	StringBuffer result = new StringBuffer();
		Matcher m = Pattern.compile("(\\s*<\\s*\\w+\\s*>\\s*)|\\s*([<>])\\s*").matcher(str);
		while (m.find()) {
			String replacement = m.group(1) != null ? // Check if Group 1 is matched
			    m.group(1) : //If yes, use Group 1
            	(m.group(2).equals("<") ? " less than " : " greater than "); // If not, replace Group 2
    		m.appendReplacement(result, replacement); //  Add the replacement
		}
		m.appendTail(result);
    	System.out.println(result.toString());
	}
}

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