diff --git a/src/categories.rs b/src/categories.rs
index f8eb1c1..d0ddcf2 100644
--- a/src/categories.rs
+++ b/src/categories.rs
@@ -525,16 +525,21 @@ pub fn run(_source_dir: PathBuf) -> std::string::String {
     let ru_news_per_category = ru_text_corpus.predict_category();
     let en_news_per_category = en_text_corpus.predict_category();

-    // let en_news_per_category = ru_news_per_category.clone()
-
     let json = json!([
-        {CATEGORIES[0]: ([&ru_news_per_category[0][..], &en_news_per_category[0][..]]).concat()},
-        {CATEGORIES[1]: ([&ru_news_per_category[1][..], &en_news_per_category[1][..]]).concat()},
-        {CATEGORIES[2]: ([&ru_news_per_category[2][..], &en_news_per_category[2][..]]).concat()},
-        {CATEGORIES[3]: ([&ru_news_per_category[3][..], &en_news_per_category[3][..]]).concat()},
-        {CATEGORIES[4]: ([&ru_news_per_category[4][..], &en_news_per_category[4][..]]).concat()},
-        {CATEGORIES[5]: ([&ru_news_per_category[5][..], &en_news_per_category[5][..]]).concat()},
-        {CATEGORIES[6]: ([&ru_news_per_category[6][..], &en_news_per_category[6][..]]).concat()}
+        {"lang_code": "ru", "category": CATEGORIES[0], "articles": ru_news_per_category[0]},
+        {"lang_code": "ru", "category": CATEGORIES[1], "articles": ru_news_per_category[1]},
+        {"lang_code": "ru", "category": CATEGORIES[2], "articles": ru_news_per_category[2]},
+        {"lang_code": "ru", "category": CATEGORIES[3], "articles": ru_news_per_category[3]},
+        {"lang_code": "ru", "category": CATEGORIES[4], "articles": ru_news_per_category[4]},
+        {"lang_code": "ru", "category": CATEGORIES[5], "articles": ru_news_per_category[5]},
+        {"lang_code": "ru", "category": CATEGORIES[6], "articles": ru_news_per_category[6]},
+        {"lang_code": "en", "category": CATEGORIES[0], "articles": en_news_per_category[0]},
+        {"lang_code": "en", "category": CATEGORIES[1], "articles": en_news_per_category[1]},
+        {"lang_code": "en", "category": CATEGORIES[2], "articles": en_news_per_category[2]},
+        {"lang_code": "en", "category": CATEGORIES[3], "articles": en_news_per_category[3]},
+        {"lang_code": "en", "category": CATEGORIES[4], "articles": en_news_per_category[4]},
+        {"lang_code": "en", "category": CATEGORIES[5], "articles": en_news_per_category[5]},
+        {"lang_code": "en", "category": CATEGORIES[6], "articles": en_news_per_category[6]},
     ]);

     let json = serde_json::to_string_pretty(&json);
diff --git a/src/news.rs b/src/news.rs
index 06b9e98..08a11a5 100644
--- a/src/news.rs
+++ b/src/news.rs
@@ -16,8 +16,8 @@ pub fn run(_source_dir: PathBuf) -> String {
     let ru_news = ru_text_corpus.filter_news();
     let en_news = en_text_corpus.filter_news();

-    let news: Vec<_> = ru_news.iter().chain(en_news.iter()).collect();
-    let json = json!({ "articles": news });
+    let json = json!([{ "lang_code":  "ru", "articles":  ru_news },
+        { "lang_code":  "en", "articles": en_news }]);
     let json = serde_json::to_string_pretty(&json);

     json.unwrap()
diff --git a/src/threads.rs b/src/threads.rs
index 857e653..87d3963 100644
--- a/src/threads.rs
+++ b/src/threads.rs
@@ -20,6 +20,7 @@ use std::sync::mpsc::channel;

 #[derive(Debug, Serialize)]
 pub struct Thread {
+    pub lang_code: String,
     pub title: String,
     pub articles: Vec<String>,
 }
@@ -98,6 +99,7 @@ impl TextCorpus {
                 .collect();

             threads.push(Thread {
+                lang_code: self.lang().to_string(),
                 title: title.to_string(),
                 articles,
             });
diff --git a/src/top.rs b/src/top.rs
index 825569a..f01e464 100644
--- a/src/top.rs
+++ b/src/top.rs
@@ -33,6 +33,7 @@ pub struct Thread {

 #[derive(Debug, Serialize, Clone)]
 pub struct Top {
+    pub lang_code: String,
     pub category: String,
     pub threads: Vec<Thread>,
 }
@@ -141,11 +142,13 @@ impl TextCorpus {
                 });
             }
             tops.push(Top {
+                lang_code: self.lang().to_string(),
                 category: category_name.to_string(),
                 threads: category_threads,
             })
         }
         tops.push(Top {
+            lang_code: self.lang().to_string(),
             category: "any".to_string(),
             threads: any_tops,
         });
@@ -176,20 +179,8 @@ pub fn run(_source_dir: PathBuf) -> std::string::String {
     let ru_tops = ru_text_corpus.build_tops();
     let en_tops = en_text_corpus.build_tops();

-    let mut tops = Vec::new();
-    for (ru_tops, en_tops) in ru_tops.iter().zip(en_tops.iter()) {
-        let joint_tops = Top {
-            category: ru_tops.category.clone(),
-            threads: ru_tops
-                .threads
-                .iter()
-                .chain(en_tops.threads.iter())
-                .map(|v| v.clone())
-                .collect(),
-        };
-        tops.push(joint_tops);
-    }
-
+    let tops: Vec<_> = ru_tops.iter().chain(en_tops.iter()).collect();
     let json = serde_json::to_string_pretty(&tops);
+
     json.unwrap()
 }