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: 7, 21, ['5831', 'G', 'c', '5535', '195', '6665', '9411', 's', 'N', 'd', 'y', 'o', 'F', 'I', 'J', 'Y', '3271', '9889', 'D', '8291', '7821', 'V', '2463', '4275']

78218291D98893271YJIFoydNs9411