diff --git a/lib/src/experimental/RGLBaseGer.gf b/lib/src/experimental/RGLBaseGer.gf
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+++ b/lib/src/experimental/RGLBaseGer.gf
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+concrete RGLBaseGer of RGLBase = 
+
+-- modules in Grammar, excluding Structural, Verb, Sentence, Question
+  TenseGer - [TTAnt],
+  NounGer - [PPartNP],               -- to be generalized
+  AdjectiveGer,
+  NumeralGer,
+  ConjunctionGer,
+  AdverbGer,
+  PhraseGer,
+----  Sentence,
+  QuestionGer - [QuestCl,QuestVP,QuestSlash,QuestIAdv,QuestIComp],
+  RelativeGer - [RelCl,RelVP,RelSlash],
+----  Idiom [NP, VP, Cl, Tense, ProgrVP, ExistNP, SelfAdvVP, SelfAdVVP, SelfNP], ---- why only these?
+
+  SymbolGer [PN, Symb, String, CN, Card, NP, MkSymb, SymbPN, CNNumNP] ;          ---- why only these?
+
+----  Construction,
+----  Extensions,
+----  Documentation ;