Example 18. Strings of identical and Z-related VL

a. MORRIS2 S2 8273         b. MORRIS2 S2 5A89



c. alternating MORRIS2 S2 8273 and 5A89



d. MORRIS1 WB 28B9/B289         e. MORRIS1 WB B289/28B9         f. MORRIS1 WB 28B9