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.

10, 20, ['9695', 'I', '5457', 'M', 'V', '7993', 'B', 'b', 'u', 'H', '7805', '3431', '6839', '3687', '8261', 'U', 'a', 'W', '9437', 'q', 'l']
q9437WaU82613687683934317805H

2, 3, ['p', 'A', 'Y', '1837', '7973', '1599']
YA

1, 15, ['5191', '3633', 'P', 'm', 'y', 'E', 'z', 'P', '6217', '5647', '3825', '4151', '4479', 'B', '6141', '2825']

6141B44794151382556476217PzEymP36335191