3 Pattern: single backslash and star: "replace literal star"
4 In assignment: a_\_z_b\*c
7 Pattern: double backslash and star: "replace backslash and everything after it"
8 In assignment: a*b_\_z_
14 Pattern: single backslash and b: "replace b"
15 In assignment: a\_\_z_c
18 Pattern: double backslash and b: "replace backslash and b"
19 In assignment: a_\_z_c