diff --git a/2021/day20/EXAMPLE1.txt b/2021/day20/EXAMPLE1.txt
new file mode 100644
index 0000000..a99a31a
--- /dev/null
+++ b/2021/day20/EXAMPLE1.txt
@@ -0,0 +1,7 @@
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+
+#..#.
+#....
+##..#
+..#..
+..###