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.

Ex Input:
7, 16, ['J', '8449', '9507', '6729', '1979', 'm', 'W', '8217', 'E', 'r', 'J', '7923', 'n', 'A', 'M', '6715', 'F', 'b', 'I', '1375', '6587', 'h', '3101', 'N']

Ex Output:
6715MAn7923JrE8217W


Ex Input:
14, 14, ['3945', '6673', 'Z', '3689', '2409', '11', '4803', '9019', '9035', '3475', 'N', 'e', '7123', 'R', '8581', 'g', 'P', 'H', 's', 'n', 'N', 'p', '4019', '2427', '6253', '3289', '6029', 'a']

Ex Output:
R


Ex Input:
4, 7, ['G', '189', '5303', '6809', '8119', '6707', 'P', 'y', '9671', '6301', '5479', '4249', 'l', '9955', 'H']

Ex Output:

P670781196809