diff --git a/py/aoc/__init__.py b/py/aoc/__init__.py
index 47b2c84..802a137 100644
--- a/py/aoc/__init__.py
+++ b/py/aoc/__init__.py
@@ -11,16 +11,19 @@ from .y2021 import d14
 from .y2022 import d01, d02, d03, d04, d05, d06, d07
 
 DAYS = {
+    # 2015
     "2015_01": y2015.d01.solve,
     "2015_02": y2015.d02.solve,
     "2015_03": y2015.d03.solve,
     "2015_04": y2015.d04.solve,
     "2015_05": y2015.d05.solve,
+    # 2016
     "2016_01": y2016.d01.solve,
     "2016_02": y2016.d02.solve,
     "2016_03": y2016.d03.solve,
     "2016_04": y2016.d04.solve,
     "2016_05": y2016.d05.solve,
+    # 2017
     "2017_01": y2017.d01.solve,
     "2017_02": y2017.d02.solve,
     "2017_03": y2017.d03.solve,
@@ -30,6 +33,7 @@ DAYS = {
     "2017_07": y2017.d07.solve,
     "2017_08": y2017.d08.solve,
     "2017_09": y2017.d09.solve,
+    # 2018
     "2018_01": y2018.d01.solve,
     "2018_02": y2018.d02.solve,
     "2018_03": y2018.d03.solve,
@@ -41,8 +45,12 @@ DAYS = {
     "2018_09": y2018.d09.solve,
     "2018_10": y2018.d10.solve,
     "2018_11": y2018.d11.solve,
+    # 2019
+    # 2020
     "2020_10": y2020.d10.solve,
+    # 2021
     "2021_14": y2021.d14.solve,
+    # 2022
     "2022_01": y2022.d01.solve,
     "2022_02": y2022.d02.solve,
     "2022_03": y2022.d03.solve,