diff --git a/aoc2020/lib/aoc20201204.dart b/aoc2020/lib/aoc20201204.dart
index d69b352..8ac3eb7 100644
--- a/aoc2020/lib/aoc20201204.dart
+++ b/aoc2020/lib/aoc20201204.dart
@@ -1,15 +1,6 @@
 import 'package:aoc2020/aocbase.dart';
 import 'package:aoc2020/model/readdata.dart';
 
-// byr (Birth Year)
-// iyr (Issue Year)
-// eyr (Expiration Year)
-// hgt (Height)
-// hcl (Hair Color)
-// ecl (Eye Color)
-// pid (Passport ID)
-// cid (Country ID)
-
 typedef Validator = bool Function(String);
 
 class AOC20201204 extends AOCBase {
@@ -50,18 +41,6 @@ class AOC20201204 extends AOCBase {
     },
     'cid': (val) => true,
   };
-// ^#([a-fA-F0-9]{6}])
-
-  // byr (Birth Year) - four digits; at least 1920 and at most 2002.
-  // iyr (Issue Year) - four digits; at least 2010 and at most 2020.
-  // eyr (Expiration Year) - four digits; at least 2020 and at most 2030.
-  // hgt (Height) - a number followed by either cm or in:
-  //     If cm, the number must be at least 150 and at most 193.
-  //     If in, the number must be at least 59 and at most 76.
-  // hcl (Hair Color) - a # followed by exactly six characters 0-9 or a-f.
-  // ecl (Eye Color) - exactly one of: amb blu brn gry grn hzl oth.
-  // pid (Passport ID) - a nine-digit number, including leading zeroes.
-  // cid (Country ID) - ignored, missing or not.
 
   bool validate(Map<String, String> passport, Map<String, Validator> validatorFn) {
     for (var field in fields) {