diff --git a/src/demo-components/ParserDemo.tsx b/src/demo-components/ParserDemo.tsx
index 6d03d36..298a1af 100644
--- a/src/demo-components/ParserDemo.tsx
+++ b/src/demo-components/ParserDemo.tsx
@@ -14,6 +14,8 @@ const working = [
   "mini-pronouns for shrunken servants",
   "grammar error correction",
   "negatives",
+  "imperative verbs",
+  "perfect tenses",
 ];
 
 const todo = [
@@ -22,9 +24,7 @@ const todo = [
   "adverbial phrases",
   "relative clauses",
   "equative verbs",
-  "perfect tenses",
   "ability verbs",
-  "imperative verbs",
   "passive verbs",
   "quantifiers",
   "demonstrative pronouns",
diff --git a/src/lib/src/parsing/parse-vp.ts b/src/lib/src/parsing/parse-vp.ts
index 416f710..3190037 100644
--- a/src/lib/src/parsing/parse-vp.ts
+++ b/src/lib/src/parsing/parse-vp.ts
@@ -25,7 +25,6 @@ import { isFirstOrSecondPersPronoun } from "../phrase-building/render-vp";
 import { LookupFunction } from "./lookup";
 import { isSecondPerson, personToGenNum } from "../misc-helpers";
 import { equals, zip } from "rambda";
-import { isPrimitive } from "util";
 import { isImperativeTense } from "../type-predicates";
 // to hide equatives type-doubling issue