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: 19, 21, ['S', '8831', '3133', 'h', '8637', 'T', 'l', 'Z', 'v', 'g', '8583', '3859', '6779', '1477', 'j', 'e', '9419', 's', 'a', 'P', '1399', '6221', 'C', '4479', 'F']

1399Pa