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:
2, 2, ['q', '7821', '8915', '3339', 'j', 'E', '9323', 'u', '5175']

Ex Output:
7821


Ex Input:
6, 12, ['g', '9719', '9225', '2203', 'o', '155', 'R', '4889', 'i', '4765', 'D', '3459', '5075', 'O', '4077', 'H', '8197', '3725', '4917', 'd', 'X', 'G', '8447', 'K', '2459']

Ex Output:
3459D4765i4889R155


Ex Input:
7, 22, ['7353', '3459', 'A', '5903', 'I', '6275', '1509', '6557', '3987', 'k', 'Z', 'c', '8437', 'g', '4793', 'p', 'N', '8449', '8591', '1685', '8023', '4867', 'Y', '1699', '9947', '8081', '4105', '7967', 'J', 'o']

Ex Output:

48678023168585918449Np4793g8437cZk398765571509