--- a/handouts/ho04.tex	Fri Jun 01 15:28:37 2018 +0100
+++ b/handouts/ho04.tex	Fri Jun 01 16:19:26 2018 +0100
@@ -780,7 +780,7 @@
        (s, Semis)\;+ \\
        (p, (LParens + RParens))\;+\\ 
        (b, (Begin + End))\;+ \\
-       (w, WhiteSpacess)
+       (w, WhiteSpaces)
       \end{array}\right)^{\mbox{\LARGE{}*}}$
 \end{center}