diff --git a/src/threading-test.ts b/src/threading-test.ts
new file mode 100644
index 0000000..a8dcf61
--- /dev/null
+++ b/src/threading-test.ts
@@ -0,0 +1,11 @@
+// Line 1: context
+// Line 2: added - CT-01 active thread here
+// Line 3: added
+// Line 4: added - CT-02 resolved thread here
+// Line 5: added
+// Line 6: added - CT-07 3-level reply chain here
+// Line 7: added
+// Line 8: added
+// Line 9: added
+// Line 10: added - CT-08 multiple parallel threads
+// Original line 5