1Testing: in x y z 2.x. 3.y. 4.z. 5Testing: in u $empty v 6.u. 7.v. 8Testing: in u " $empty" v 9.u. 10. . 11.v. 12Testing: in u $empty $empty$a v 13.u. 14.a. 15.v. 16Testing: in $a_b 17.a. 18.b. 19Testing: in $* 20.abc. 21.d. 22.e. 23Testing: in $@ 24.abc. 25.d. 26.e. 27Testing: in -$*- 28.-abc. 29.d. 30.e-. 31Testing: in -$@- 32.-abc. 33.d. 34.e-. 35Testing: in $a_b -$a_b- 36.a. 37.b. 38.-a. 39.b-. 40Finished 41