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+<h2> Introduction of Code </h2>
+
+<h4> Run Order </h4>
+<ul type = 'disc'>
+  <li>download.py + google_drive.py (for dataset downloads)</li>
+  <li>preprocessing.py (preprocess to generate processed lung and nodule mask)</li>
+  <li>train-generator.py (train using unet)</li>
+  <li>vowel-extranct.py + project_config.py (extract vowel)</li>
+  <li>augmentation.py (data augmentation)</li>
+  <li>exam.py (eliminate invalid vowel)</li>
+  <li>main.py + model.py + project_config.py + data_prepare.py (train using 3dcnn)</li>
+</ul>