diff --git a/src/lib/phrase-building/compile-vp.ts b/src/lib/phrase-building/compile-vp.ts
index 2fa9306..33f0f5e 100644
--- a/src/lib/phrase-building/compile-vp.ts
+++ b/src/lib/phrase-building/compile-vp.ts
@@ -145,6 +145,8 @@ function compileVerbWNegative(head: T.PsString | undefined, restRaw: T.PsString[
                 desc: ["isNu"],
             }),
         ],
+        // verbs that have a perfective prefix that is not و or وا can put the
+        // nu *before* the prefix as well // TODO: also وي prefixes?
         ...!headSegment.isOoOrWaaHead ? [[
             makeSegment(nu, ["isNu"]),
             headSegment.adjust({ ps: removeAccents }),