import java.util.*;
import java.lang.*;
import java.util.regex.*;

class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
    List<String> res = new ArrayList<String>();
    Pattern p = Pattern.compile("([&]{1,2}|=>?| +)");
    String s = "s=a&=>b";
    Matcher m = p.matcher(s);
    int pos = 0;
    while (m.find()) {
        if (pos != m.start()) {
            res.add(s.substring(pos, m.start()));
        }
        res.add(m.group());
        pos = m.end();
    }
    if (pos != s.length()) {
        res.add(s.substring(pos));
    }
    for (String t : res) {
        System.out.println("'"+t+"'");
    }
	}
}