diff --git a/script/generate-case-insensitive-mapping.js b/script/generate-case-insensitive-mapping.js
new file mode 100644
index 000000000..7256863b8
--- /dev/null
+++ b/script/generate-case-insensitive-mapping.js
@@ -0,0 +1,50 @@
+const mappings = [
+    /* basic Russian: https://github.com/clangen/musikcube/issues/613 */
+    'а:А',
+    'б:Б',
+    'в:В',
+    'г:Г',
+    'д:Д',
+    'е:Е',
+    'ё:Ё',
+    'ж:Ж',
+    'з:З',
+    'и:И',
+    'й:Й',
+    'к:К',
+    'л:Л',
+    'м:М',
+    'н:Н',
+    'о:О',
+    'п:П',
+    'р:Р',
+    'с:С',
+    'т:Т',
+    'у:У',
+    'ф:Ф',
+    'х:Х',
+    'ц:Ц',
+    'ч:Ч',
+    'ш:Ш',
+    'щ:Щ',
+    'ъ:Ъ',
+    'ы:Ы',
+    'ь:Ь',
+    'э:Э',
+    'ю:Ю',
+    'я:Я',
+];
+
+String.prototype.toHex = function () {
+  var result = '';
+  for (var i = 0; i < this.length; i++) {
+    result += this.charCodeAt(i).toString(16);
+  }
+  return '0x' + result;
+};
+
+for (let i = 0; i < mappings.length; i++) {
+  const parts = mappings[i].split(':');
+  parts[1] = [parts[1], parts[0]];
+  console.log(`{ (u32)${parts[0].toHex()} /* ${parts[0]} */, u8"${parts[1].join('')}" },`);
+}