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: 8, 12, ['7335', '3763', '1365', '2571', '4231', '6653', '7691', 'a', '2799', 'F', '781', 'g', '1151', 'h', '6183', 'S', '1219', '3459', '3439']

g781F2799a