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: 4, 18, ['h', '6181', '6721', '3231', '9863', 'f', 'r', 'd', 'j', '6827', '4485', '4823', '7619', 'J', '3899', 'x', '3993', 'O', '3559', '9483', 'q', '5259', '953']

O3993x3899J7619482344856827jdrf98633231