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.
4, 7, ['G', '189', '5303', '6809', '8119', '6707', 'P', 'y', '9671', '6301', '5479', '4249', 'l', '9955', 'H']