Index: gc_core/py/lang_core/gc_engine.py
==================================================================
--- gc_core/py/lang_core/gc_engine.py
+++ gc_core/py/lang_core/gc_engine.py
@@ -913,28 +913,28 @@
                     self.lToken[i]["sNewValue"] = sValue
 
     def rewrite (self, bDebug=False):
         "rewrite the sentence, modify tokens, purge the token list"
         lNewToken = []
-        nMergeUntil = -1
+        nMergeUntil = 0
         dTokenMerger = None
         for dToken in self.lToken:
             bKeepToken = True
             if "bImmune" in dToken:
                 nErrorStart = self.nOffsetWithinParagraph + dToken["nStart"]
                 if nErrorStart in self.dError:
                     if bDebug:
                         print("immunity -> error removed:", self.dError[nErrorStart])
                     del self.dError[nErrorStart]
-            if dToken["i"] <= nMergeUntil:
-                dTokenMerger["sValue"] += " " * (dToken["i"]["nStart"] - dTokenMerger["nEnd"]) + dToken["i"]["sValue"]
-                dTokenMerger["nEnd"] = dToken["i"]["nEnd"]
+            if nMergeUntil and dToken["i"] <= nMergeUntil:
+                dTokenMerger["sValue"] += " " * (dToken["nStart"] - dTokenMerger["nEnd"]) + dToken["sValue"]
+                dTokenMerger["nEnd"] = dToken["nEnd"]
                 if bDebug:
                     print("Merged token:", dTokenMerger["sValue"])
                 bKeepToken = False
             if "nMergeUntil" in dToken:
-                if not nMergeUntil: # this token should alerady been merged with a previous token
+                if dToken["i"] > nMergeUntil: # this token is not already merged with a previous token
                     dTokenMerger = dToken
                 if dToken["nMergeUntil"] > nMergeUntil:
                     nMergeUntil = dToken["nMergeUntil"]  
                 del dToken["nMergeUntil"]
             elif "bToRemove" in dToken:

Index: gc_lang/fr/rules.grx
==================================================================
--- gc_lang/fr/rules.grx
+++ gc_lang/fr/rules.grx
@@ -4602,11 +4602,11 @@
 @@@@
 
 __p_notre_père_qui_es_au_cieux__
     notre père qui [es|est] aux cieux
         <<- ~4>> !
-        <<- ~3:0>> *
+        <<- ~3:0>> _
 
 
 !!
 !!
 !!!! Formes verbales sans sujet