diff --git a/js/utils.js b/js/utils.js
index daf43d3fd156d5a604476dad1ef21cb2a887ed7b..e888c603445f2080af61eda4b26cfef7b7ead911 100644
--- a/js/utils.js
+++ b/js/utils.js
@@ -152,6 +152,26 @@ function addA(word) {
 	return `a ${word}`;
 }
 
+/**
+ * Assembles a list of strings into a proper list.
+ *
+ * @param {Array<string>} items
+ * @returns {string}
+ */
+function assembleList(items) {
+	switch (items.length) {
+		case 0:
+			return "none";
+		case 1:
+			return items[0];
+		case 2:
+			return `${items[0]} and ${items[1]}`;
+	}
+	const last = items.pop();
+	let r = items.join(", ");
+	return `${r} and ${last}`;
+}
+
 /**
  * @param {number} i
  * @returns {string}