diff --git a/challenges/frequency-deviation/test/7/input.txt b/challenges/frequency-deviation/test/7/input.txt
new file mode 100644
index 0000000..06227db
--- /dev/null
+++ b/challenges/frequency-deviation/test/7/input.txt
@@ -0,0 +1 @@
+aabbbbaa
\ No newline at end of file
diff --git a/challenges/frequency-deviation/test/7/output.txt b/challenges/frequency-deviation/test/7/output.txt
new file mode 100644
index 0000000..e440e5c
--- /dev/null
+++ b/challenges/frequency-deviation/test/7/output.txt
@@ -0,0 +1 @@
+3
\ No newline at end of file
diff --git a/challenges/frequency-deviation/test/8/input.txt b/challenges/frequency-deviation/test/8/input.txt
new file mode 100644
index 0000000..17b8af2
--- /dev/null
+++ b/challenges/frequency-deviation/test/8/input.txt
@@ -0,0 +1 @@
+aaabbbbbabcbbbaaaa
\ No newline at end of file
diff --git a/challenges/frequency-deviation/test/8/output.txt b/challenges/frequency-deviation/test/8/output.txt
new file mode 100644
index 0000000..301160a
--- /dev/null
+++ b/challenges/frequency-deviation/test/8/output.txt
@@ -0,0 +1 @@
+8
\ No newline at end of file
diff --git a/challenges/frequency-deviation/test/9/input.txt b/challenges/frequency-deviation/test/9/input.txt
new file mode 100644
index 0000000..3a265a8
--- /dev/null
+++ b/challenges/frequency-deviation/test/9/input.txt
@@ -0,0 +1 @@
+abbaaab
\ No newline at end of file
diff --git a/challenges/frequency-deviation/test/9/output.txt b/challenges/frequency-deviation/test/9/output.txt
new file mode 100644
index 0000000..d8263ee
--- /dev/null
+++ b/challenges/frequency-deviation/test/9/output.txt
@@ -0,0 +1 @@
+2
\ No newline at end of file