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]: 5, 5, ['821', '1417', 'r', '9267', 's', '8093']
[EX A]: s

[EX Q]: 10, 19, ['9017', 'g', '6645', 'u', '993', '8505', '685', 'L', 'p', 'M', 'H', '7955', 'l', '1283', '1007', 'l', '7905', '1291', '5309', '6367', 'n']
[EX A]: 530912917905l10071283l7955HM

[EX Q]: 4, 7, ['4241', '2649', 'G', 'E', 'U', '3787', 'n']
[EX A]:
n3787UE