active f f a mark f g f a active f X f active X f mark X mark f X proper f X f proper X proper a ok a proper g X g proper X f ok X ok f X g ok X ok g X top mark X top proper X top ok X top active X active 1 f 1 a 0 mark 1 g 1 proper 1 ok 1 top 1 INNERMOST ./TRS/TRCSR/inn/Ex18_Luc06_C.trs