In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.

[EX Q]: 1, 2, ['6627', 'J']
[EX A]: J7266

[EX Q]: 16, 22, ['7741', 'A', 'M', 'N', '7967', '1049', '6971', '5547', '3263', 'x', '2675', '9757', '343', 'g', '8277', '3727', '5711', 'M', 'J', '6417', '1085', '3885', 'M']
[EX A]: 588358017146JM11757273

[EX Q]: 7, 8, ['a', 'Z', '5277', '1251', '6555', 'y', '4837', 'o', '4951', 'U', 'I', '4809', 'A', '6281', 'i', '4945', '1913', '2671', 'f', 'T', '9367', '145', 'p', '6759', '5061', 'm', 'y', 'S', 'Y', '4567']
[EX A]:
o7384