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: 6, 17, ['W', '855', '9085', 'c', 'x', '6547', 'f', '4871', '3531', 'S', 'K', '9775', '7415', 'R', 'j', '3331', '2429', 'X', 'r', '6907', '3883', '8355', 'B', '8421', 'i', 'j', '2569']

24293331jR74159775KS35314871f6547