Millisecond Forums

Hey everyone! So I'm coding a memory experiment, during the encoding task I want to present 50 words to a participant and repeat those 50 words in the same order they were originally presented 2 more times. The 50 presented words are taken from two lists equally, so 25 words from "List 1" and 25 words from "List 2" in random and mixed order. My goal of achieving this is to populate an empty list at the beginning of the experiment with the randomly selected words from each list mixed together and present that three times to the participant. I have no idea how to do this correctly and have done some searching, but I haven't found anything that has helped me do this, but I think this is completely possible. Thank you for any and all help!