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, 12, ['O', '9145', 'U', 'Z', 'w', 'K', 'y', 'r', '8071', '7621', 'T', '9199', 'm', 'O', '9033', '5015', 'S', 'W', 'J', '6151', 'a', '3025', 'k', '1195', 'h', '2821']

9199T76218071ry