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: 10, 19, ['9587', 'q', 'f', 'q', '6043', '8311', 'm', '7431', '3805', 'w', '7717', '6661', 's', '5615', 'e', 'U', 'd', '9531', 'k', 'v', '197']

k9531dUe5615s66617717w