Index: graphspell-js/dawg.js
==================================================================
--- graphspell-js/dawg.js
+++ graphspell-js/dawg.js
@@ -78,10 +78,14 @@
             lEntry.push([sFlex, dAff.get(sAff), dTag.get(sTag)]);
         }
         if (lEntry.length == 0) {
             throw "Error. Empty lexicon";
         }
+
+        lEntry = [...new Set(lEntry.map(e => JSON.stringify(e)))].map(s => JSON.parse(s));
+        // Set can’t distinguish similar lists, so we transform list item in string given to the Set
+        // then we transform items in list a new.
         
         // Preparing DAWG
         console.log(" > Preparing list of words");
         let lVal = lChar.concat(lAff).concat(lTag);
         let lWord = [];