diff --git a/test.tf b/test.tf
new file mode 100644
index 0000000..0206427
--- /dev/null
+++ b/test.tf
@@ -0,0 +1,9 @@
+locals {
+  main_countries = ["FR"]
+  all_countries  = ["FR", "DE", "ES"]
+
+  blocked_countries_except_main = [
+    for code in local.all_countries : code
+    if not (code in local.main_countries)
+  ]
+}
\ No newline at end of file