diff --git a/subjects/quadchecker/README.md b/subjects/quadchecker/README.md
index 60dce5fa..121c5478 100644
--- a/subjects/quadchecker/README.md
+++ b/subjects/quadchecker/README.md
@@ -57,3 +57,15 @@ $ ./quadE 1 2 | go run .
 [quadC] [1] [2] || [quadE] [1] [2]
 $
 ```
+
+- If it's not a raid function:
+
+```console
+$ echo 0 0 | go run .
+Not a Raid function
+$ echo -n "o--o"$'\n'"|"$'\n'"o"
+o--o
+|
+o$ echo -n "o--o"$'\n'"|"$'\n'"o" | go run .
+Not a Raid function
+```
diff --git a/subjects/quadchecker/audit/README.md b/subjects/quadchecker/audit/README.md
index 0a240c63..2aab5430 100644
--- a/subjects/quadchecker/audit/README.md
+++ b/subjects/quadchecker/audit/README.md
@@ -71,3 +71,43 @@ Not a Raid function
 ```
 
 ###### Does the program returns the value above?
+
+##### Try running the program: `"echo -n "o--" | ./quadchecker"`
+
+```
+Not a Raid function
+```
+
+###### Does the program returns the value above?
+
+##### Try running the program: `"echo -n "/****" | ./quadchecker"`
+
+```
+Not a Raid function
+```
+
+###### Does the program returns the value above?
+
+##### Try running the program: `"echo -n "ABBB" | ./quadchecker"`
+
+```
+Not a Raid function
+```
+
+###### Does the program returns the value above?
+
+##### Try running the program: `"echo -n "ABBBA"$'\n'"B"$'\n'"B" | ./quadchecker"`
+
+```
+Not a Raid function
+```
+
+###### Does the program returns the value above?
+
+##### Try running the program: `"echo -n "o--o"$'\n'"|"$'\n'"o" | ./quadchecker"`
+
+```
+Not a Raid function
+```
+
+###### Does the program returns the value above?