Definition: 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.
Input: 18, 20, ['f', '4717', 's', 'v', 'w', '5543', 'p', '1091', 'j', 'X', 'h', 'J', '1681', '1565', 'C', '6771', '7909', 'P', 'Y', 'r', 'M']

P, Y, r