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: 2, 12, ['7641', '4737', 'A', '2857', 'K', '1089', '6695', 'c', '8495', '3951', '9929', '2103', 'o', '495', '9381', '6259', '2305', 'a', 'L']

2103992939518495c66951089K2857A4737