--- a/hws/hw01.tex	Tue Oct 06 00:39:34 2020 +0100
+++ b/hws/hw01.tex	Tue Oct 06 13:32:00 2020 +0100
@@ -72,7 +72,7 @@
       \{[a], [b], [c], []\}$.
 
 \item (1) How many basic regular expressions are there to match
-      the string $abcd$? (2) How many if they cannot include
+      \textbf{only} the string $abcd$? (2) How many if they cannot include
       $\ONE$ and $\ZERO$? (3) How many if they are also not
       allowed to contain stars? (4) How many if they are also
       not allowed to contain $\_ + \_$?