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: 9, 20, ['7145', 'M', 'q', 'p', '991', '1981', 'H', '9703', 'X', 'j', '4277', 'm', '6877', '5651', 'w', 'J', '3715', '3055', 'z', 'F', '3479', '9193', 'S', 'X', '3241', 'v', 'q']

Fz30553715Jw56516877m4277jX