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, 18, ['7039', 'a', 'A', 'q', '1495', 'g', 'g', 'T', 'n', 'F', 'Q', 'v', '6909', 'v', 'z', '2923', '8323', '9899', '3999', '7651', 'R', 'P', 'r', '3401', 'j', '1835', '2737']

989983232923zv6909vQFnT