Help please

In order to understand the concept of sampling distribution, we need to figure out what are the possible samples (from a population). Let's consider a very small population: {1, 5, 7, 11}. Hence, our population size is N=4. Now, we would like to draw samples from the population where the sample size is n-2. The practice question for this online participation is List all possible samples of size n=2. Replacement is allowed during the sampling process. There are 16 possible samples