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.

6, 7, ['R', '4581', 'r', '8391', 'D', '4973', '8835', 'Q', 'Y', '2441']
88354973

1, 2, ['U', 'G', 'N']
GU

2, 5, ['W', 'Z', '7545', 'E', '9177', '73']

9177E7545Z