diff --git "a/LiiNi-coder/202512/15 PGM \353\252\250\354\235\214\354\202\254\354\240\204.md" "b/LiiNi-coder/202512/15 PGM \353\252\250\354\235\214\354\202\254\354\240\204.md"
new file mode 100644
index 00000000..95ce627b
--- /dev/null
+++ "b/LiiNi-coder/202512/15 PGM \353\252\250\354\235\214\354\202\254\354\240\204.md"	
@@ -0,0 +1,34 @@
+```java
+import java.util.*;
+
+class Solution {
+    private static final char[] VOWELS = {'A','E','I','O','U'};
+    private static List<String> dict;
+
+    public int solution(String word) {
+        dict = new ArrayList<>();
+        dfs("");
+
+        for(int i = 0; i < dict.size(); i++){
+            if(dict.get(i).equals(word)){
+                return i + 1;
+            }
+        }
+        return 0;
+    }
+
+    private void dfs(String cur){
+        if(cur.length() > 0){
+            dict.add(cur);
+        }
+        if(cur.length() == 5){
+            return;
+        }
+
+        for(int i = 0; i < 5; i++){
+            dfs(cur + VOWELS[i]);
+        }
+    }
+}
+
+```