diff --git a/src/collocatordb.h b/src/collocatordb.h
index a033dcb..4e1d412 100644
--- a/src/collocatordb.h
+++ b/src/collocatordb.h
@@ -86,14 +86,35 @@
 
 #else
 typedef struct COLLOCATORDB COLLOCATORDB;
+typedef struct {
+    uint32_t w2;
+    uint64_t f2;
+    uint64_t raw;
+    double pmi;
+    double npmi;
+    double llr;
+    double lfmd;
+    double md;
+    uint64_t left_raw;
+    uint64_t right_raw;
+    double left_pmi;
+    double right_pmi;
+    double dice;
+    double logdice;
+    double ldaf;
+    int window;
+    int af_window;
+} Collocator ;
 #endif
 
 extern COLLOCATORDB *open_collocatordb(const char *s);
 extern COLLOCATORDB *open_collocatordb_for_write(const char *s);
 extern void inc_collocator(COLLOCATORDB *db, uint64_t w1, uint64_t w2, int8_t dist);
 extern void dump_collocators(COLLOCATORDB *db, uint32_t w1, uint32_t w2, int8_t dist);
-extern void get_collocators(COLLOCATORDB *db, uint32_t w1);
-extern void get_collocation_scores(COLLOCATORDB *db, uint32_t w1, uint32_t w2);
+extern Collocator *get_collocators(COLLOCATORDB *db, uint32_t w1);
+extern Collocator *get_collocation_scores(COLLOCATORDB *db, uint32_t w1, uint32_t w2);
 extern char *get_collocators_as_json(COLLOCATORDB *db, uint32_t w1);
 extern char *get_collocation_scores_as_json(COLLOCATORDB *db, uint32_t w1, uint32_t w2);
 extern char *get_word(COLLOCATORDB *db, uint32_t w1);
+extern void read_vocab(COLLOCATORDB *db, char *fname);
+