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.
11, 12, ['h', 'G', 'w', '2291', '8039', 'H', '8167', '3727', '7125', '2473', 'a', 'j', 'u', 'X', 'y', '9951', '7429', '8431', '1547']