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 find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant string. 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. Perform the operations in order, i.e., do not concatenate the elements and then reverse the string.
Input: 20, 20, ['8951', '5979', '1753', '569', 'Z', '3139', 's', 'j', 'l', '4507', 'Z', '7443', 'p', 'd', 'e', 'p', '2355', '243', '8245', 'K', '1549', '1871', '7221', '4197', 'u', 'V']

K