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: 21, 27, ['G', '3149', '2797', '2783', 't', '8931', '2221', '9241', '1529', '3329', 'u', 'Z', 'G', '5079', '1331', 'A', 'd', 'z', 'G', '9529', 'X', '1765', 'w', '9657', '5275', '1489', 'O']

O148952759657w1765X