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: 3, 20, ['L', 'F', '1029', '3515', '7965', 'O', 'v', 'v', '4685', '4413', 'd', 'M', '225', '3925', 'Y', 'N', '8985', '7767', '2535', 'Y', '6871', '9823', '4505', 'q', 'z', 'k', 'P']

Y253577678985NY3925225Md44134685vvO796535151029