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:
4, 5, ['a', 'I', 'J', 'a', '9779', 'i', '7835', 'S', '5809']

Ex Output:
9779a


Ex Input:
15, 18, ['9099', '2041', '7065', '1323', '2267', '5877', 'r', 'j', '4411', 'u', 'V', '4919', '6401', '8449', 'X', 'H', 'z', 's', '2543', '4643']

Ex Output:
szHX


Ex Input:
13, 20, ['5569', 'p', 'V', '5603', '5105', '1609', '7197', 'k', 'B', '4451', '1195', '835', '5487', 'i', '5715', '6237', '9667', '6163', '9783', 'F', 'J', 'g', '9665', '5995', 'E', '5289', 'S', '9167', 'w', 'P']

Ex Output:

F97836163966762375715i5487