diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -20,9 +20,9 @@ The projects of the same problem/environment will be placed in the same folder.
 
 
 ## Abbreviations
+- **UL**: Unsupervised Learning
 - **RL**: Reinforcement Learning
 - **SL**: Supervised Learning
-- **UL**: Unsupervised Learning