Foregone parallel-letter-frequency exercise (#640)

homersimpsons · web-flow · commit bc8b7c4afa9a · 2024-02-26T00:23:31.000+01:00
diff --git a/config.json b/config.json
@@ -1236,6 +1236,9 @@
         "prerequisites": [],
         "difficulty": 5
       }
+    ],
+    "foregone": [
+      "parallel-letter-frequency"
     ]
   },
   "concepts": [
