diff --git a/test/identifier.mjs b/test/identifier.mjs
index 7ca93b7..86565ae 100644
--- a/test/identifier.mjs
+++ b/test/identifier.mjs
@@ -63,6 +63,13 @@ describe("Scru128Id", function () {
       "036Z8PUQ5A7J0TI08P4J 6CYA",
       "F5LXX1ZZ5PNORYNQGLHZMSP34",
       "ZZZZZZZZZZZZZZZZZZZZZZZZZ",
+      "039O\tVVKLFMQLQE7FZLLZ7C7T",
+      "039ONVVKLFMQLQ漢字FGVD1",
+      "039ONVVKL🤣QE7FZR2HDOQU",
+      "頭ONVVKLFMQLQE7FZRHTGCFZ",
+      "039ONVVKLFMQLQE7FZTFT5尾",
+      "039漢字A52XP4BVF4SN94E09CJA",
+      "039OOA52XP4BV😘SN97642MWL",
     ];
 
     for (const e of cases) {