Estonian - the 29th complete RGL language. Copied from Kaarel Kaljurand's and Inari Listenmaa's repository in https://github.com/GF-Estonian/GF-Estonian, where later developments will continue to take place.

src/estonian/AdverbEst.gf

@@ -0,0 +1,25 @@
+concrete AdverbEst of Adverb = CatEst ** open ResEst, Prelude in {
+
+  flags coding=utf8;
+
+  lin
+    PositAdvAdj a = {s = a.s ! Posit ! AAdv} ;
+    ComparAdvAdj cadv a np = {
+      s = cadv.s ++ a.s ! Posit ! AAdv ++ cadv.p ++ np.s ! NPCase Nom
+      } ;
+    ComparAdvAdjS cadv a s = {
+      s = cadv.s ++ a.s ! Posit ! AAdv ++ cadv.p ++ s.s
+      } ;
+
+    PrepNP prep np = {s = preOrPost prep.isPre prep.s (np.s ! prep.c)} ;
+
+    AdAdv = cc2 ;
+
+    PositAdAAdj a = {s = a.s ! Posit ! AN (NCase Sg Gen)} ; -- älyttömän
+
+    SubjS = cc2 ;
+----b    AdvSC s = s ;
+
+    AdnCAdv cadv = {s = cadv.s ++ "kui"} ;
+
+}