Janice , I can't find the document I was working on last month . Can you help me to look for it ?   Susan , I'm sorry . Did you look up those files I requested ?   Yes , but I still can not find it . Maybe it is in this cabinet .   I couldn't find the files you request , even though I checked all the cross-references . I don't think it's there .   I am sure that document was filed .   Well , let me check again under a different heading .   Good idea ! It seems that I asked you to put it in Nova's files .   Maybe that's why I couldn't find it . All the documents on Nova are filed under ' V ' . 