Index: graphspell-js/str_transform.js
==================================================================
--- graphspell-js/str_transform.js
+++ graphspell-js/str_transform.js
@@ -55,16 +55,16 @@
         sWord = sWord.toLowerCase();
         sWord = [...sWord].map(c => this._xTransCharsForSimplification.gl_get(c, c)).join('');
         let sNewWord = "";
         let i = 1;
         for (let c of sWord) {
-            if (c == 'e' || c != sWord.slice(i, i+1)) {  // exception for <e> to avoid confusion between crée / créai
+            if (c != sWord.slice(i, i+1) || (c == 'e' && sWord.slice(i, i+2) != "ee")) {  // exception for <e> to avoid confusion between crée / créai
                 sNewWord += c;
             }
             i++;
         }
-        return sNewWord.replace(/eau/g, "o").replace(/au/g, "o").replace(/ai/g, "é").replace(/ei/g, "é").replace(/ph/g, "f");
+        return sNewWord.replace(/eau/g, "o").replace(/au/g, "o").replace(/ai/g, "éi").replace(/ei/g, "é").replace(/ph/g, "f");
     },
 
     _xTransNumbersToExponent: new Map([
         ["0", "⁰"], ["1", "¹"], ["2", "²"], ["3", "³"], ["4", "⁴"], ["5", "⁵"], ["6", "⁶"], ["7", "⁷"], ["8", "⁸"], ["9", "⁹"]
     ]),

Index: graphspell/str_transform.py
==================================================================
--- graphspell/str_transform.py
+++ graphspell/str_transform.py
@@ -44,13 +44,13 @@
 def simplifyWord (sWord):
     "word simplication before calculating distance between words"
     sWord = sWord.lower().translate(_xTransCharsForSimplification)
     sNewWord = ""
     for i, c in enumerate(sWord, 1):
-        if c == 'e' or c != sWord[i:i+1]:  # exception for <e> to avoid confusion between crée / créai
+        if c != sWord[i:i+1] or (c == 'e' and sWord[i:i+2] != "ee"):  # exception for <e> to avoid confusion between crée / créai
             sNewWord += c
-    return sNewWord.replace("eau", "o").replace("au", "o").replace("ai", "é").replace("ei", "é").replace("ph", "f")
+    return sNewWord.replace("eau", "o").replace("au", "o").replace("ai", "éi").replace("ei", "é").replace("ph", "f")
 
 
 _xTransNumbersToExponent = str.maketrans({
     "0": "⁰", "1": "¹", "2": "²", "3": "³", "4": "⁴", "5": "⁵", "6": "⁶", "7": "⁷", "8": "⁸", "9": "⁹"
 })