diff --git a/2022/day4-sets.py b/2022/day4-sets.py
new file mode 100644
index 0000000..8ead7fe
--- /dev/null
+++ b/2022/day4-sets.py
@@ -0,0 +1,14 @@
+from helpers import *
+
+with open('input/4', 'r') as file:
+    sets_per_line = [
+        (set(range(min(n[0], n[1]), max(n[0], n[1])+1)),
+         set(range(min(n[2], n[3]), max(n[2], n[3])+1)))
+        for n in lines_to_numbers(file.readlines())
+    ]
+
+count = sum((set1 <= set2 or set1 >= set2) for (set1, set2) in sets_per_line)
+print(f'Part 1: {count} elves have no unique work in their pairing')  # Part 1
+
+count = sum((len(set1 & set2) > 0) for (set1, set2) in sets_per_line)
+print(f'Part 2: {count} elf pairs have overlapping work in their pairing')  # Part 2
diff --git a/2022/day5.py b/2022/day5.py
index 0b4f0d0..29b34dd 100644
--- a/2022/day5.py
+++ b/2022/day5.py
@@ -1,13 +1,10 @@
-import re
-numbers_pattern = re.compile(r'((?:(?<!\d)-)?\d+)')
+from helpers import *
 
 with open('input/5', 'r') as file:
     input_stacks, _, input_orders = file.read().strip().partition('\n\n')
 
-input_stacks_split = input_stacks.split('\n')
-input_stacks_transposed = [''.join(l[i] for l in input_stacks_split[::-1]).strip(' []') for i in range(len(input_stacks_split[0]))]
-starting_stack_strings = {int(l[0]):l[1:] for l in input_stacks_transposed if len(l) > 0}
-order_numbers = [[int(x) for x in numbers_pattern.findall(line)] for line in input_orders.split('\n')]
+starting_stack_strings = {int(l[0]):l[1:] for l in transpose_array_of_strings(input_stacks.split('\n'), reverse_y=True, strip=' []') if len(l) > 0}
+order_numbers = lines_to_numbers(input_orders.split('\n'))
 
 stacks = {k:[c for c in v] for k,v in starting_stack_strings.items()}
 for (num, source, dest) in order_numbers:
diff --git a/2022/helpers.py b/2022/helpers.py
new file mode 100644
index 0000000..195735d
--- /dev/null
+++ b/2022/helpers.py
@@ -0,0 +1,11 @@
+import re
+numbers_pattern = re.compile(r'((?:(?<!\d)-)?\d+)')
+
+def line_to_numbers(line):
+    return [int(x) for x in numbers_pattern.findall(line)]
+
+def lines_to_numbers(lines):
+    return [line_to_numbers(line) for line in lines]
+
+def transpose_array_of_strings(aos, reverse_x = False, reverse_y = False, strip = ''):
+    return [''.join(l[i] for l in aos[::-1 if reverse_y else 1]).strip(strip) for i in range(len(aos[0]))[::-1 if reverse_x else 1]]