diff --git a/2020/20/20.py b/2020/20/20.py
index 56566d4..b0cc321 100644
--- a/2020/20/20.py
+++ b/2020/20/20.py
@@ -1,5 +1,5 @@
 def read_file():
-	with open("input.txt","r") as f:
+	with open("input_sample.txt","r") as f:
 		tiledict = {}
 		tiles = f.read().split('\n\n')
 		for tile in tiles:
@@ -57,6 +57,18 @@ def part1(tiles):
 def remove_border(tile):
 	return [row[1:-1] for row in tile[1:-1]]
 
+def transpose(tile):
+	"""Transposes, aka rotates and flips."""
+	return list(''.join(row) for row in zip(*tile))
+
+def flip(tile):
+	"""Flips along left-right axis."""
+	return [''.join(reversed(row)) for row in tile]
+
+def rotate(tile):
+	"""Rotates 90 degrees clockwise."""
+	return flip(transpose(tile))
+
 def get_image(tiles):
 	edges = get_edges(tiles, flip=True)
 	graph = find_adjacent(edges)
@@ -71,8 +83,8 @@ def part2(tiles):
 	monster = ['                  # ',
 	           '#    ##    ##    ###',
 	           ' #  #  #  #  #  #   ']
-	# scan all 8 orientations of the image?
-	## or 8 orientations of the monster
+	# 8 orientations of the monster
+	# scan
 	return 2366 # ok i cheated here
 
 def main():