started a subdir for the book

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diff --git a/book/examples/chapter9/ParadigmsIta.gf b/book/examples/chapter9/ParadigmsIta.gf
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+resource ParadigmsIta = GrammarIta [N,A,V] ** 
+  open ResIta, GrammarIta, Prelude in {
+
+oper
+  masculine : Gender = Masc ;
+  feminine : Gender = Fem ;
+
+  accusative : Case = Acc ;
+  dative : Case = Dat ;
+
+  mkN = overload {
+    mkN : (vino : Str) -> N 
+      = \n -> lin N (regNoun n) ;
+    mkN : (uomo, uomini : Str) -> Gender -> N 
+      = \s,p,g -> lin N (mkNoun s p g) ;
+    } ;
+
+  mkA = overload {
+    mkA : (nero : Str) -> A 
+      = \a -> lin A (regAdj a) ;
+    mkA : (buono,buona,buoni,buone : Str) -> Bool -> A 
+      = \sm,sf,pm,pf,p -> lin A (mkAdj sm sf pm pf False) ;
+    } ;
+
+  preA : A -> A
+      = \a -> lin A {s = a.s ; isPre = True} ;
+
+  mkV = overload {
+    mkV : (finire : Str) -> V 
+      = \v -> lin V (regVerb v) ;
+    mkV : (andare,vado,vadi,va,andiamo,andate,vanno,andato : Str) -> V 
+      = \i,p1,p2,p3,p4,p5,p6,p -> lin V (mkVerb i p1 p2 p3 p4 p5 p6 p Avere) ;
+    } ;
+
+  essereV : V -> V
+    = \v -> lin V {s = v.s ; aux = Essere} ;
+
+  mkV2 = overload {
+    mkV2 : Str -> V2
+      = \s -> lin V2 (regVerb s ** {c = accusative}) ;
+    mkV2 : V -> V2
+      = \v -> lin V2 (v ** {c = accusative}) ;
+    mkV2 : V -> Case -> V2
+      = \v,c -> lin V2 (v ** {c = c}) ;
+    } ;
+
+}