import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
class Main
{
  public static void main (String[] args) throws java.lang.Exception
  {
     String formula = "BMI = ( Weight / ( Height * Height ) ) * 703";
     String pattern = "(?:^|(?<=[=+\\-*/()]))\\s*([a-z]+)\\s*(?:$|(?=[=+\\-*/()]))";
     Pattern p = Pattern.compile(pattern, Pattern.CASE_INSENSITIVE);
     Matcher m = p.matcher(formula);
     while(m.find()) {
       System.out.println(m.group(1));
     }
  }
}

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