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: 12, 19, ['2463', '4971', 'B', 'z', '1907', 'Q', 'o', 'g', 'Z', 'O', 'y', '3985', '7399', '5895', '13', '5425', '1249', '3489', '1931', 'd', 'u', '703', '9497', '4451', '3091']

193134891249542513589573993985