diff --git a/reading04/Makefile b/reading04/Makefile
new file mode 100644
index 0000000..3d9f567
--- /dev/null
+++ b/reading04/Makefile
@@ -0,0 +1,11 @@
+test:
+	@$(MAKE) -sk test-all
+
+test-all:	test-scripts test-filters
+
+test-scripts:
+	curl -sLO https://www3.nd.edu/~pbui/teaching/cse.20289.sp25/static/txt/reading04/test_filters.sh
+	chmod +x test_filters.sh
+
+test-filters:
+	./test_filters.sh
diff --git a/reading04/filters.sh b/reading04/filters.sh
new file mode 100644
index 0000000..523032a
--- /dev/null
+++ b/reading04/filters.sh
@@ -0,0 +1,43 @@
+#!/bin/bash
+
+q1_answer() {
+    # TODO: List only the names of the turtles in sorted order.
+    curl -sL https://yld.me/raw/hoUY | cut -d: -f1 | sort 
+}
+
+q2_answer() {
+    # TODO: List only the colors of the turtles in all capitals.
+    curl -sL https://yld.me/raw/hoUY | curl -sL https://yld.me/raw/hoUY | cut -d: -f3 | tr [a-z] [A-Z]
+}
+
+q3_answer() {
+    # TODO: Replace all weapons with plowshares.
+    curl -sL https://yld.me/raw/hoUY | sed 's/:.*:/:plowshare:/'
+}
+
+q4_answer() {
+    # TODO: List only the turtles whose names end in lo.
+    curl -sL https://yld.me/raw/hoUY | cut -d: -f1 | grep -E '*lo$'
+}
+
+q5_answer() {
+    # TODO: List only the turtles with names that have two consecutive vowels.
+    curl -sL https://yld.me/raw/hoUY | cut -d: -f1 | grep -E '[aeiou]{2}'
+}
+
+q6_answer() {
+    # TODO: Count how many colors don't begin with a vowel
+    curl -sL https://yld.me/raw/hoUY | cut -d: -f3 | grep -E '^[^aeiou]' | wc -l
+}
+
+q7_answer() {
+    # TODO: List only the turtles names whose name ends with a vowel and whose
+    # weapon ends with a vowel.
+    curl -sL https://yld.me/raw/hoUY | grep -E '^[^:]+[aeiou]:[^:]+[aeiou]:' | cut -d: -f1
+}
+
+q8_answer() {
+    # TODO: List only the colors of the turtles whose name has two of the same
+    # consecutive letter (i.e. aa, bb, etc.)
+    curl -sL https://yld.me/raw/hoUY | grep -E '^[^:]*([a-zA-Z])\1[^:]*:' | cut -d: -f3
+}