diff --git a/3-tidy-up.js b/3-tidy-up.js
index b78576b..0bb0d39 100644
--- a/3-tidy-up.js
+++ b/3-tidy-up.js
@@ -186,16 +186,21 @@ function handleLine(parsedLine) {
     const glossTree = getGlossTree(sensesWithoutInflectionGlosses);
     
     for (const reading of readings) {
-        let result = lemmaDict[word][reading][pos][String(etymology_number)];
-        let etym_num = etymology_number;
-        while (result && result.glossTree && result.glossTree.size > 0) {
-            etym_num += 1;
-            result = lemmaDict[word][reading][pos][String(etym_num)];
+        const posDict = lemmaDict[word]?.[reading]?.[pos] || {};
+        let etymNum = etymology_number;
+        let result = posDict[String(etymNum)];
+    
+        while (result?.glossTree?.size > 0) {
+            etymNum += 1;
+            result = posDict[String(etymNum)];
         }
-        result = /** @type {LemmaInfo}*/ (ensureNestedObject(lemmaDict, [word, reading, pos, String(etym_num)]));
+    
+        result = /** @type {LemmaInfo} */ (ensureNestedObject(lemmaDict, [word, reading, pos, String(etymNum)]));
+    
         result.ipa ??= ipa;
         result.glossTree = glossTree;
     }
+    
 }
 
 /**