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]: 14, 20, ['7043', '8365', 'm', '8535', 'i', '9021', '6367', 'Q', '5707', 'r', 'D', 'H', 'e', 'g', '5847', '7645', 'f', 'R', 'u', '1699', '795', 'h', 'H', '489']
[EX A]: 1699uRf76455847g

[EX Q]: 1, 2, ['5275', '671', '4105']
[EX A]: 6715275

[EX Q]: 14, 15, ['U', '2991', '9667', '7803', 'k', '8721', 'j', 'k', 'v', '9745', '6339', 'e', '9341', '8245', '5523', 'H', '5733', '5999']
[EX A]:
55238245