(VAR x) (RULES r(e(x)) -> w(r(x)) i(t(x)) -> e(r(x)) e(w(x)) -> r(i(x)) t(e(x)) -> r(e(x)) w(r(x)) -> i(t(x)) e(r(x)) -> e(w(x)) r(i(t(e(r(x))))) -> e(w(r(i(t(e(x)))))) ) (COMMENT TPDB SRS_Standard/Secret_05_SRS/matchbox1 )