diff --git a/scripts/aggregate_words.js b/scripts/aggregate_words.js
index e69de29..0618f4f 100644
--- a/scripts/aggregate_words.js
+++ b/scripts/aggregate_words.js
@@ -0,0 +1,37 @@
+const admin = require('firebase-admin')
+
+const args = process.argv.slice(2);
+
+if (args.length != 1) {
+    console.log('Firebase service account file required')
+    console.log('nodejs aggregate_words.js <account-file>')
+    process.exit(-1)
+}
+
+const serviceAccount = require(args[0]);
+
+(async () => {
+    admin.initializeApp({
+        credential: admin.credential.cert(serviceAccount)
+    });
+
+    const db = admin.firestore()
+
+    console.log('Firestore credentials ok')
+
+    console.log('Reading sentences')
+
+    const sentencesRef = await db.collection('sentences').get()
+
+    const words = {}
+    
+    sentencesRef.forEach((sentence) => {
+        const { text } = sentence.data()
+        text.trim().split(' ').forEach(word => words[word] = (words[word] ?? 0) + 1)
+    })
+
+    Object.entries(words)
+            .sort((a, b) => b[1] - a[1])
+            .slice(0, 100)
+            .forEach((pair) => console.log(pair[0], pair[1]))
+})();