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: 1, 20, ['8639', 'D', '963', 'x', '4581', 'w', '1047', '783', '2957', 'G', 'G', 'Z', 'e', 'l', 'r', 'R', '9101', 'T', '7219', '5927', 'D', '8871', 'm', '5503', 'v', 'E']

59277219T9101RrleZGG29577831047w4581x963D8639