diff --git a/src/transliteration_data.c b/src/transliteration_data.c
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index 00000000..4d247596
Binary files /dev/null and b/src/transliteration_data.c differ
diff --git a/src/transliteration_rule.h b/src/transliteration_rule.h
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--- /dev/null
+++ b/src/transliteration_rule.h
@@ -0,0 +1,47 @@
+#ifndef TRANSLITERATION_RULE_H
+#define TRANSLITERATION_RULE_H
+
+#include <stdlib.h>
+
+typedef enum {
+    CONTEXT_TYPE_NONE,
+    CONTEXT_TYPE_STRING,
+    CONTEXT_TYPE_WORD_BOUNDARY,
+    CONTEXT_TYPE_REGEX
+} context_type_t;
+
+
+typedef struct transliteration_rule_source {
+    char *key;
+
+    context_type_t pre_context_type;
+    size_t pre_context_max_len;
+    char *pre_context;
+
+    context_type_t post_context_type;
+    size_t post_context_max_len;
+    char *post_context;
+
+    char *replacement;
+
+    int move;
+    char *group_regex_str;
+} transliteration_rule_source_t;
+
+
+typedef struct transliteration_step_source {
+    step_type_t type;
+    int rules_start;
+    int rules_length;
+    char *name;
+} transliteration_step_source_t;
+
+typedef struct transliterator_source {
+    char *name;
+    uint8_t internal;
+    int steps_start;
+    int steps_length;
+} transliterator_source_t;
+
+
+#endif