diff --git a/converter.py b/converter.py
index ab120ef..0fbc432 100644
--- a/converter.py
+++ b/converter.py
@@ -64,10 +64,14 @@ def write_q_and_a_to_markdown_file(markdown_file, q_and_a):
     markdown_file.writelines('\n')
     markdown_file.writelines('## {}'.format(q_and_a.question))
 
+    import string
+    alphabet = string.ascii_lowercase
+
     # for i, obj in q_and_a.answerArray:
     for i, obj in enumerate(q_and_a.answerArray):
         markdown_file.writelines('\n')
-        markdown_file.writelines(' - {}'.format(q_and_a.answerArray[i]))
+        alpha = alphabet[i]
+        markdown_file.writelines(' - {}) {}'.format(alpha, q_and_a.answerArray[i]))
 
     markdown_file.writelines('---')
     return markdown_file
@@ -88,6 +92,16 @@ def handle_q_and_a_row(line, list_of_q_and_as, category):
     return list_of_q_and_as
 
 
-# def to_pdf(filename):
-#     import docker
-#     client = docker.from_env()
+# docker run --rm --init -v $PWD:/home/marp/app/ -e LANG=$LANG marpteam/marp-cli slide-deck.md --pdf
+# minimal (windows): docker run -v ${PWD}:/home/marp/app/ marpteam/marp-cli slide-deck.md --pdf
+def to_pdf(filename):
+    import docker
+    client = docker.from_env()
+    current_dir = os.getcwd()
+    print(current_dir)
+    # https://docker-py.readthedocs.io/en/stable/containers.html
+    client.containers.run('marpteam/marp-cli', '{} --pdf'.format(filename), volumes=[current_dir + ':/home/marp/app/'],
+                          name="marp", detach=True, remove=True, init=True)
+
+    container = client.containers.get('marp')
+    print(container.logs())
diff --git a/requirements.txt b/requirements.txt
index e69de29..5becbba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -0,0 +1,8 @@
+certifi==2021.5.30
+chardet==4.0.0
+docker==5.0.0
+idna==2.10
+pywin32==227
+requests==2.25.1
+urllib3==1.26.5
+websocket-client==1.1.0
diff --git a/tests.py b/tests.py
index da1b977..b0a2def 100644
--- a/tests.py
+++ b/tests.py
@@ -24,6 +24,14 @@ class TestDiary(unittest.TestCase):
         # assert file was created
         assert(os.path.exists(os.path.join(BASE_FODLER, "slide-deck.md")))
 
+    def test_to_pdf(self):
+        # python command_line 2021-01
+        BASE_FODLER = "test_data"
+        converter.to_pdf("slide-deck.md")
+
+        # assert file was created
+        assert(os.path.exists(os.path.join(BASE_FODLER, "slide-deck.md")))
+
     # def test_create_month_file_january(self):
     #     # python command_line 2021-01
     #     BASE_FODLER = "test_data"