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, 14, ['R', 'F', 'i', '3355', '4543', 'E', 'j', 'q', 'B', 'F', '7195', 'B', '2255', '7513', '5549', '1389', '9069', 'U', 'v']

Ex Output:
75132255B7195FBqj


Ex Input:
2, 4, ['T', 'q', '6485', '9125']

Ex Output:
91256485q


Ex Input:
3, 6, ['2073', '2499', 'e', '6151', '7873', 'Q', 'B', '5239']

Ex Output:

Q78736151e