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]: 2, 16, ['6623', 'E', 'S', '8679', '7465', '2769', 'G', '9635', 'Z', 'Y', '6593', '9535', '5247', '2185', '7071', 'P', '7897', 'm']
[EX A]: P17075812742553593956YZ5369G967256479768SE

[EX Q]: 10, 13, ['K', '6565', 'A', '5073', '1249', '2817', '3663', '3799', 'G', '2707', '3405', '5999', '5577', 'c', 'p', 'V', '8373', 'e', 'W', '5977', 's', 'p', 'E', '5425']
[EX A]: 7755999550437072

[EX Q]: 11, 16, ['2855', 'V', 'v', 'R', 'z', 'j', 'z', '5815', 'N', 'H', 'k', 'C', '5573', '5847', '3161', 'e', '4081', '3823', '149', 'D', 'B', 'v', 'N', '9325', '8053']
[EX A]:
e161374853755Ck