diff --git a/test/a/textbook.en.md b/test/a/textbook.en.md
index 9c8018fbc..1c5e7c26c 100644
--- a/test/a/textbook.en.md
+++ b/test/a/textbook.en.md
@@ -9,3 +9,9 @@ lessons:
 ---
 
 ## TEST A  en
+
+If test01 : must appear with the order ABC
+
+If test02 : must appear with the order BAC
+
+If test03 : must appear with the order CAB