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, ['a', '6541']

Ex Output:
6541


Ex Input:
3, 11, ['M', '1269', '8573', 'S', 'f', 'B', '3667', '3561', 'i', 'A', '3687']

Ex Output:
3687Ai35613667BfS8573


Ex Input:
3, 7, ['169', '1947', 'i', 'w', '8871', '9759', '5389', '3353', 'N', 'v', '665', 'R', 'q', '2323', 'd', 'N', '4211', 'A', 'A', '9571', '1129', 'W']

Ex Output:

538997598871wi