diff --git a/test/d/textbook.en.md b/test/d/textbook.en.md
index 0d9a8247f..6f9e1b5c0 100644
--- a/test/d/textbook.en.md
+++ b/test/d/textbook.en.md
@@ -8,4 +8,10 @@ lessons:
       order: 3
 ---
 
-## TEST B en
+## TEST B 
+
+If test01 : must appear with the order ABC
+
+If test02 : must appear with the order BAC
+
+If test03 : must appear with the order CAB
\ No newline at end of file