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: 6, 19, ['b', '8915', '5741', '5895', 'z', 'X', 'F', 'X', 'q', 'c', 'e', '6109', 's', '7381', 's', '5709', '2759', 'N', '6861', 'h', '4109', '3959']

6861N27595709s7381s6109ecqXFX