diff --git a/inject_prod.sh b/inject_prod.sh
new file mode 100644
index 0000000..7a24633
--- /dev/null
+++ b/inject_prod.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# arguments:
+# 1. path to glossary file, E.g. for glossary in ~/data/glossary.tsv should be data/glossary.tsv
+# 2. path to in.tsv file
+# all path should be given as absolute path without ~/ at the very beginning (as seen in the example above)
+
+glossary_path="$1"
+in_path="$2"
+
+. ~/transfix-mt/scripts/do_inject_prod.sh "$glossary_path" "$in_path"
diff --git a/scripts/do_inject_prod.sh b/scripts/do_inject_prod.sh
new file mode 100644
index 0000000..d0695d7
--- /dev/null
+++ b/scripts/do_inject_prod.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# arguments:
+# 1. path to glossary file, E.g. for glossary in ~/data/glossary.tsv should be data/glossary.tsv
+# 2. path to in.tsv file
+# all path should be given as absolute path without ~/ at the very beginning (as seen in the example above)
+
+glossary_path="$1"
+in_path="$2"
+
+source ~/gpu/bin/activate
+
+cd ~/transfix-mt/scripts
+
+python lemmatize_glossary.py "$glossary_path"
+python inject_prod.py "$glossary_path" "$in_path"
diff --git a/scripts/inject_prod.py b/scripts/inject_prod.py
new file mode 100644
index 0000000..c8ebd7f
--- /dev/null
+++ b/scripts/inject_prod.py
@@ -0,0 +1,75 @@
+import os
+import pandas as pd
+import rapidfuzz
+import sys
+
+from rapidfuzz.fuzz import partial_ratio
+from rapidfuzz.utils import default_process
+
+
+def read_arguments():
+    try:
+        path_glossary, path_in = sys.argv
+        return path_glossary, path_in
+    except Exception:
+        print("ERROR: Wrong argument.")
+        sys.exit(1)
+
+
+def full_strip(line):
+    return ' '.join(line.split())
+
+
+
+def get_injected(sentence, sentence_en, sequence, inject):
+    sen = sentence.split()
+    sen_en = sentence_en.split()
+    window_size = len(sequence.split())
+    maxx = 0
+    maxx_prv = 0
+    maxxi = 0
+    for i in range(len(sen) - window_size + 1):
+        current = rapidfuzz.fuzz.ratio(' '.join(sen[i:i + window_size]), sequence)
+        if current >= maxx:
+            maxx_prv = maxx
+            maxx = current
+            maxxi = i
+    if maxx_prv != maxx:
+        return ' '.join(sen_en[:maxxi + window_size]) + ' $' + inject + '$ ' + ' '.join(sen_en[maxxi + window_size:])
+    return sentence_en
+
+
+THRESHOLD = 70
+
+glossary_arg_path, in_arg_path = read_arguments()
+train_in_path = os.path.join(os.path.expanduser('~'), in_arg_path)
+
+glossary = pd.read_csv(os.path.join(os.path.expanduser('~'), glossary_arg_path), sep='\t')
+glossary['source_lem'] = [str(default_process(x)) for x in glossary['source_lem']]
+glossary['hash'] = [hash(x) for x in glossary['source']]
+glossary = glossary[glossary['hash'] % 100 > 16]
+
+file_en = pd.read_csv(train_in_path, sep='\t', header=None, names=['text'])
+file_en['text'] = [default_process(text) for text in file_en['text'].values.tolist()]
+file_en = file_en['text'].values.tolist()
+
+file_en_lemmatized = pd.read_csv(train_in_path + '.lemmatized', sep='\t', header=None, names=['text'])
+file_en_lemmatized['text'] = [default_process(text) for text in file_en_lemmatized['text'].values.tolist()]
+file_en_lemmatized = file_en_lemmatized['text'].values.tolist()
+
+en = []
+translation_line_counts = []
+for line, line_en in zip(file_en_lemmatized, file_en):
+    line = default_process(line)
+    matchez = rapidfuzz.process.extract(
+        query=line, choices=glossary['source_lem'], limit=5, score_cutoff=THRESHOLD, scorer=partial_ratio)
+    if len(matchez) > 0:
+        for match in matchez:
+            polish_translation = \
+                glossary.loc[lambda df: df['source_lem'] == match[0]]['result'].astype(str).values.flatten()[0]
+            en.append(get_injected(line, line_en, match[0], polish_translation))
+
+
+with open(train_in_path, 'w') as file_en_write:
+    for e in en:
+        file_en_write.write(e + '\n')