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: 12, 14, ['1769', 'f', 'I', '1205', '953', '3663', 's', '5053', '6935', 'S', '6915', 'T', '7459', 'a', '1799', '9047', '4841', '6715', '641', 'Q', '4493', '6709']

a7459T