diff --git a/src/somali/ParamSom.gf b/src/somali/ParamSom.gf
index 698590ad..2cd9a8bb 100644
--- a/src/somali/ParamSom.gf
+++ b/src/somali/ParamSom.gf
@@ -197,6 +197,10 @@ param
                   | Passive ; -- Hack: RGL only supports V2s as passive, so I can reuse V2's preposition slot for passives as well, and save >200 parameters. (Don't ask.)
 
   PrepCombination = Ugu | Uga | Ula | Kaga | Kula | Kala
+                  | Lagu  -- laygu, lagugu, nalagu, laydinku
+                  | Laga  -- layga, lagaa, nalaga, laydinka
+               -- | TODO rest of combinations with impersonal-la
+               -- | TODO incorporate reflexive too
                   | Single PrepositionPlus ;
 
 oper
@@ -204,7 +208,9 @@ oper
     let oneWay : PrepositionPlus => Preposition => PrepCombination =
           \\x,y => case <x,y> of {
               <Passive,NoPrep> => Single Passive ;
-              <Passive,p> => Single (P p) ; -- FIXME p "waa lagu arkay" gives infinitely many trees now, because the passive is ignored here. Is there a combination for passive + personal pronoun + preposition?
+              <Passive,Ku> => Lagu ;
+              <Passive,Ka> => Laga ;
+              <Passive,p> => Single (P p) ; -- TODO rest of combinations
               <P z,_> => case <z,y> of {
                       <U,U|Ku> => Ugu ;
                       <U,Ka>   => Uga ;
diff --git a/src/somali/ResSom.gf b/src/somali/ResSom.gf
index ffb27a51..6bc48481 100644
--- a/src/somali/ResSom.gf
+++ b/src/somali/ResSom.gf
@@ -351,33 +351,40 @@ oper
     Sg1_Prep => table { Ugu => "iigu" ; Uga => "iiga" ;
                    Ula => "iila" ; Kaga => "igaga" ;
                    Kula => "igula" ; Kala => "igala" ;
+                   Lagu => "laygu" ; Laga => "layga" ;
                    Single p => (prepTable ! p).s ! Sg1_Prep } ;
     Sg2_Prep => table { Ugu => "kuugu" ; Uga => "kaaga" ;
                    Ula => "kuula" ; Kaga => "kaaga" ;
                    Kula => "kugula" ; Kala => "kaala" ;
+                   Lagu => "lagugu" ; Laga => "lagaa" ;
                    Single p => (prepTable ! p).s ! Sg2_Prep } ;
     Pl1_Prep Excl =>
            table { Ugu => "noogu" ; Uga => "nooga" ;
                    Ula => "noola" ; Kaga => "nagaga" ;
                    Kula => "nagula" ; Kala => "nagala" ;
+                   Lagu => "nalagu" ; Laga => "nalaga" ;
                    Single p => (prepTable ! p).s ! Pl1_Prep Excl } ;
     Pl1_Prep Incl =>
            table { Ugu => "inoogu" ; Uga => "inooga" ;
                    Ula => "inoola" ; Kaga => "inagaga" ;
                    Kula => "inagula" ; Kala => "inagala" ;
+                   Lagu => "inalagu" ; Laga => "inalaga" ;
                    Single p => (prepTable ! p).s ! Pl1_Prep Incl } ;
     Pl2_Prep => table { Ugu => "idiinku" ; Uga => "idiinka" ;
                    Ula => "idiinla" ; Kaga => "idinkaga" ;
                    Kula => "idinkula" ; Kala => "idinkala" ;
+                   Lagu => "laydinku" ; Laga => "laydinka" ;
                    Single p => (prepTable ! p).s ! Pl2_Prep } ;
     Impers_Prep =>
            table { Ugu => "loogu" ; Uga => "looga" ;
                    Ula => "loola" ; Kaga => "lagaga" ;
                    Kula => "lagula" ; Kala => "lagala" ;
+                   Lagu => "lagu" ; Laga => "laga" ; -- TODO check
                    Single p => (prepTable ! p).s ! Impers_Prep } ;
     a   => table { Ugu => "ugu" ; Uga => "uga" ;
                    Ula => "ula" ; Kaga => "kaga" ;
                    Kula => "kula" ; Kala => "kala" ;
+                   Lagu => "lagu" ; Laga => "laga" ;
                    Single p => (prepTable ! p).s ! a }
   } ;