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: 15, 20, ['A', 'V', '5553', '5977', '2367', 'D', '5861', 'q', 'n', '2235', '7721', 'C', '5573', 'F', '7069', 'q', '6687', 'S', '2809', 'i', 'z', 'x', '3261', 'A', '5945', 'k', '8527', '9523', 'S']

i2809S6687q7069