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.

3, 5, ['1381', 'z', '2015', 'L', '7519', 'w', '2999', '267', 'P']
7519L2015

4, 6, ['5237', 'U', '7073', 'K', 'R', 'g', 'D', '17', 'I', '3039']
gRK

4, 5, ['u', '9497', '6989', 'X', '37']

37X