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 Q]: 6, 15, ['7417', 'a', '479', 'E', '1575', '6937', '4649', '9879', '9875', 'c', '1671', 'K', '3773', '6999', 'J', '9889', 'q', '4099', 'r', '1859', 'W']
[EX A]: J69993773K1671c9875987946496937

[EX Q]: 8, 10, ['o', '1199', '5255', '3357', '2587', '9041', 'E', '8481', 'p', '8819', 'D', '5493', '7309', '4563', '4763']
[EX A]: 8819p8481

[EX Q]: 2, 5, ['p', '3177', 'S', 'q', '1569', '9207', 'w', '9919', '2059', 'k', 'e', 'c', 'G', '2137', 'A', 'J', '4681', '8309', 'K']
[EX A]:
1569qS3177