diff --git a/2020/src/day6.nim b/2020/src/day6.nim
index 2e698d6..40d18dd 100644
--- a/2020/src/day6.nim
+++ b/2020/src/day6.nim
@@ -1,9 +1,10 @@
 import streams, sets, strutils, sequtils
 
+proc asGroups(s: Stream): seq[seq[string]] =
+  s.readAll.split("\n\n").mapIt it.split("\n").filterIt(it != "")
+
 proc part1*(s: Stream): int =
-  s.readAll().split("\n\n").mapIt(it.split("\n").foldl(a.union(b.toHashSet), initHashSet[char]()).len).foldl(a + b)
+  s.asGroups.mapIt(it.foldl(a.union(b.toHashSet), initHashSet[char]()).len).foldl a + b
 
 proc part2*(s: Stream): int =
-  s.readAll().split("\n\n").mapIt(
-    it.split("\n").filterIt(it != "").foldl(a.intersection(b.toHashSet), "abcdefghijklmnopqrstuvwxyz".toHashSet()).len
-  ).foldl(a + b)
+  s.asGroups.mapIt(it.foldl(a.intersection(b.toHashSet), toSeq('a'..'z').toHashSet).len).foldl(a + b)