自作フォームから固定ページへ移動できない(404になる)

<input size="30" type="text" name="name" value="" placeholder="例：鈴木　太朗" />

m, p, posts, w, cat, withcomments, withoutcomments, s, search, exact, 
sentence, calendar, page, paged, more, tb, pb, author, order, orderby, 
year, monthnum, day, hour, minute, second, name, category_name, tag, 
feed, author_name, static, pagename, page_id, error, attachment, 
attachment_id, subpost, subpost_id, preview, robots, taxonomy, term, 
cpage, post_type, and embed.