revise R|I|V|A + I|Z R|IH|B|A + I|Z R|I|B|A + I|Z R|IH|V|IH|Z R|I|V|IH|Z R|IH|B|IH|Z R|I|B|IH|Z R|IH|V|A + I|S R|I|V|A + I|S R|IH|B|A + I|S R|I|B|A + I|S R|IH|V|IH|S R|I|V|IH|S R|IH|B|IH|S R|I|B|IH|S to T|O rewrite R|IH|R|IH|T