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:
3, 4, ['3979', 'L', 'x', '2961', '5933', 'q', 'y', '6509', '3047', '3919', '2015', '6887', 'u', 'F', '8617', '3793', 's', 'x', '2453', '5763', '2399', '6635', '8039', 'R', '5495', '2175', '8067']

Ex Output:
2961x


Ex Input:
2, 4, ['3631', 'I', 'O', '6095', 'z', '2127', 'V', 'j', 'U']

Ex Output:
6095OI


Ex Input:
5, 7, ['O', '3459', 'g', '2389', 'X', '9397', 'U', 'z', 'G']

Ex Output:

U9397X