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, 4, ['Z', 'a', '7659', 'E', '5827', '9553', 'w', 'a', 'i']

Ex Output:
E7659a


Ex Input:
9, 19, ['y', '9003', 'P', '9671', '7731', 'w', '9443', 'r', 'c', 't', 'd', '7113', '2803', 'H', '7911', 'T', 'i', '6595', '9751', '2115', '8291', 'W', 'g']

Ex Output:
97516595iT7911H28037113dtc


Ex Input:
4, 7, ['9303', 'f', 'K', 'L', 't', '2121', '4039', 'i', '4807']

Ex Output:

40392121tL