diff --git a/lib/resource/finnish/SyntaxFin.gf b/lib/resource/finnish/SyntaxFin.gf
index ac6f02c0e..e0d725d49 100644
--- a/lib/resource/finnish/SyntaxFin.gf
+++ b/lib/resource/finnish/SyntaxFin.gf
@@ -268,7 +268,7 @@ oper
 
   npGenDet : Number -> NounPhrase -> CommNounPhrase -> NounPhrase = \n,jussi,talo ->
     {s = \\c => jussi.s ! NPCase Gen ++ 
-                ifPossSuffix talo jussi.p jussi.n (npForm2Case n c) ;
+                ifPossSuffix talo jussi.p n (npForm2Case n c) ;
      n = n ; 
      p = NP3
     } ;
@@ -276,7 +276,7 @@ oper
   npGenDetNum : Numeral -> NounPhrase -> CommNounPhrase -> NounPhrase = 
     \viisi,jussi,talo ->
     {s = \\c => jussi.s ! NPCase Gen ++ viisi.s ! c ++ 
-                ifPossSuffix talo jussi.p jussi.n (
+                ifPossSuffix talo jussi.p Pl (
                   case viisi.isNum of {
                     True => Part ;
                     _ => npForm2Case Pl c
diff --git a/lib/resource/french/SyntaxFre.gf b/lib/resource/french/SyntaxFre.gf
index abff082f4..dbedbf626 100644
--- a/lib/resource/french/SyntaxFre.gf
+++ b/lib/resource/french/SyntaxFre.gf
@@ -335,4 +335,6 @@ oper
       (["en train"] ++ elisDe ++
        vp.s ! VIInfinit ! (pgen2gen subj.g) ! subj.n ! subj.p) ;
 
+  conjunctCase : CaseA -> CaseA = \c -> c ;
+
 }
diff --git a/lib/resource/italian/SyntaxIta.gf b/lib/resource/italian/SyntaxIta.gf
index 7591de11b..649bbbb16 100644
--- a/lib/resource/italian/SyntaxIta.gf
+++ b/lib/resource/italian/SyntaxIta.gf
@@ -281,4 +281,10 @@ oper
       (nameNounPhrase (mkProperName (                          --- this function
          vp.s ! VIGerund ! (pgen2gen subj.g) ! subj.n ! subj.p) Masc)) ;
 
+  conjunctCase : CaseA -> CaseA = \c -> case c of {
+    CPrep _ => accusative ;
+    _ => c
+    } ;
+
 }
+
diff --git a/lib/resource/romance/SyntaxRomance.gf b/lib/resource/romance/SyntaxRomance.gf
index e0543125a..39427d09b 100644
--- a/lib/resource/romance/SyntaxRomance.gf
+++ b/lib/resource/romance/SyntaxRomance.gf
@@ -1039,14 +1039,22 @@ oper
     {s1,s2 : CaseA => Str ; g : PronGen ; n : Number ; p : Person} ;
 
   twoNounPhrase : (_,_ : NounPhrase) -> ListNounPhrase = \x,y ->
-    {s1 = \\c => x.s ! stressed c ; s2 = \\c => y.s ! stressed c} ** 
+    {s1 = \\c => x.s ! stressed c ; 
+     s2 = \\c => y.s ! stressed (conjunctCase c)} ** 
     {n = conjNumber x.n y.n ; g = conjGender x.g y.g ; p = conjPers x.p y.p} ;
 
   consNounPhrase : ListNounPhrase -> NounPhrase -> ListNounPhrase =  \xs,x ->
-    {s1 = \\c => xs.s1 ! c ++ CO.comma ++ xs.s2 ! c ; 
-     s2 = \\c => x.s ! stressed c} ** 
+    {s1 = \\c => xs.s1 ! c ++ CO.comma ++ xs.s2 ! conjunctCase c ; 
+     s2 = \\c => x.s ! stressed (conjunctCase c)} ** 
     {n = conjNumber xs.n x.n ; g = conjGender xs.g x.g ; p =conjPers xs.p x.p} ;
 
+-- French says "la somme de x et de y" whereas 
+-- Italian says "la somma di x e y" and similarly for Spanish.
+
+  conjunctCase : CaseA -> CaseA ;
+--  conjunctCase c = nominative ; -- Spanish, Italian
+--  conjunctCase c = c ; -- French
+
   conjunctNounPhrase : Conjunction -> ListNounPhrase -> NounPhrase = \co,xs ->
     {s = \\c => xs.s1 ! pform2case c ++ co.s ++ xs.s2 ! pform2case c} ** 
     {n = conjNumber co.n xs.n ; g = xs.g ; p = xs.p ; c = Clit0 } ;
diff --git a/lib/resource/spanish/SyntaxSpa.gf b/lib/resource/spanish/SyntaxSpa.gf
index 6d8df8941..814bf8a03 100644
--- a/lib/resource/spanish/SyntaxSpa.gf
+++ b/lib/resource/spanish/SyntaxSpa.gf
@@ -345,8 +345,16 @@ oper
   ouAdv = ss "donde" ;
   pourquoiAdv = ss "porqué" ;
 
-  etConj = ss "y" ** {n = Pl} ;
-  ouConj = ss "o" ** {n = Sg}  ;
+-- The forms of "y" and "o" depend on the prefix of the word that
+-- follows.
+
+  etConj = {s = pre {
+    "y" ; 
+    "y" / strs {"ya" ; "ye" ; "yo" ; "yu"} ;
+    "e" / strs {"i" ; "hi" ; "y"}
+    }} ** {n = Pl} ;
+  ouConj = {s = pre {"o" ; "u" / strs {"o" ; "ho"}}} ** {n = Sg} ;
+
   etetConj = sd2 "y" "y" ** {n = Pl}  ;
   ououConj = sd2 "o" "o" ** {n = Sg}  ;
   niniConj = sd2 "no" "ni" ** {n = Sg}  ; ----
@@ -364,5 +372,10 @@ oper
       (nameNounPhrase (mkProperName (                          --- this function
          vp.s ! VIGerund ! (pgen2gen subj.g) ! subj.n ! subj.p) Masc)) ;
 
+  conjunctCase : CaseA -> CaseA = \c -> case c of {
+    CPrep _ => accusative ;
+    _ => c
+    } ;
+
 }