courses/20.test/36.temporaryDDsystem/10.a/30.en/textbook.en.md

---
lessons:
    - slug: test01
      order: 1
    - slug: test02
      order: 2
    - slug: test03
      order: 2
---

## TEST A  

If test01 : must appear with the order ABC

If test02 : must appear with the order BAC

If test03 : must appear with the order CAB