We start at line 128 and sample two-digit numbers. The first number is 53, which is invalid. The second is 53, which is also invalid. Then we have 79 followed by 64, which are invalid. Finally, we have 28, which is a valid number, followed by 40 and 11, which are also within our population. Then we get 52, 74, 67, 90, 82, and 65, which are invalid. Lastly, we have 23, a valid member of the population.
Our sample thus includes the members labeled 11, 23, 28, and 40.
