Teacher:In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to list all elements of A from the ith element to the jth element. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.
Teacher: Now, understand the problem? Solve this instance: 12, 20, ['2479', 'u', '1439', '519', '7867', '9691', 'x', 'm', 'w', 'X', 'r', 'u', 'p', '687', 'z', 'j', '1597', 'j', 'r', '9313', '7959', 'z']
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
u, p, 687, z, j, 1597, j, r, 9313