diff --git a/src/components/np-picker/PronounPicker.tsx b/src/components/np-picker/PronounPicker.tsx
index 3ca9dd8..eec0183 100644
--- a/src/components/np-picker/PronounPicker.tsx
+++ b/src/components/np-picker/PronounPicker.tsx
@@ -21,9 +21,9 @@ const labels = {
         [{ masc: "He/It", fem: "She/It"}, "They"],
     ],
     eObject: [
-        ["I", "Us"],
-        ["You", "You pl."],
-        [{ masc: "Him/It", fem: "Her/It"}, "Them"],
+        ["I", "us"],
+        ["you", "you (pl.)"],
+        [{ masc: "him/it", fem: "her/it"}, "them"],
     ],
     p: {
         far: [
diff --git a/src/content/index.ts b/src/content/index.ts
index 7610435..2fa1450 100644
--- a/src/content/index.ts
+++ b/src/content/index.ts
@@ -84,7 +84,7 @@ import * as games from "!babel-loader!@lingdocs/mdx-loader!./games.mdx";
 // @ts-ignore
 import * as pronounPicker from "!babel-loader!@lingdocs/mdx-loader!./practice-tools/pronoun-picker.mdx";
 // @ts-ignore
-import * as phraseBuilder from "!babel-loader!@lingdocs/mdx-loader!./practice-tools/phrase-builder.mdx";
+// import * as phraseBuilder from "!babel-loader!@lingdocs/mdx-loader!./practice-tools/phrase-builder.mdx";
 
 const contentTree = [
     {
@@ -271,10 +271,10 @@ const contentTree = [
                 import: pronounPicker,
                 slug: "pronoun-picker",
             },
-            {
-                import: phraseBuilder,
-                slug: "phrase-builder",
-            },
+            // {
+            //     import: phraseBuilder,
+            //     slug: "phrase-builder",
+            // },
         ],
     },
 ];
diff --git a/src/lib/np-tools.ts b/src/lib/np-tools.ts
index 7ce1c0b..8409dbc 100644
--- a/src/lib/np-tools.ts
+++ b/src/lib/np-tools.ts
@@ -24,15 +24,23 @@ export function randomPerson(p?: T.Person) {
 }
 
 function isInvalidSubjObjCombo(subj: T.Person, obj: T.Person): boolean {
-    // subject is first person
-    if ([0, 1, 6, 7].includes(subj)) {
-        return [0, 1, 6, 7].includes(obj);
-    }
-    // subject is second person
-    if ([2, 3, 8, 9].includes(subj)) {
-        return [2, 3, 8, 9].includes(obj);
-    }
-    return false;
+    const firstPeople = [
+        T.Person.FirstSingMale,
+        T.Person.FirstSingFemale,
+        T.Person.FirstPlurMale,
+        T.Person.FirstPlurFemale,
+    ];
+    const secondPeople = [
+        T.Person.SecondSingMale,
+        T.Person.SecondSingFemale,
+        T.Person.SecondPlurMale,
+        T.Person.SecondPlurFemale,
+    ];
+    return (
+        (firstPeople.includes(subj) && firstPeople.includes(obj))
+        ||
+        (secondPeople.includes(subj) && secondPeople.includes(obj))
+    );
 }
 
 export function randomSubjObj(old?: { subj: T.Person, obj: T.Person }): { subj: T.Person, obj: T.Person } {