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, 3, ['6017', 'o', '1817', 'W']
[EX A]: 7181o7106

[EX Q]: 13, 13, ['1771', 'u', 'w', 'k', 'P', '7297', 'Y', '2223', 'X', 'u', '3067', '19', 'w', 'A', 'b', '4309', 'O', '7215', 'z', '6609', '4479', '3149', '6829', '8597', '4829']
[EX A]: w

[EX Q]: 14, 14, ['8817', '5783', 'e', '3683', 'Q', '683', 'I', 'p', '1021', 'V', 'W', 'd', '4529', '323', '6231', '581', 'K', 'k', '5973', 'r', '1535', '1683', '59', '1587', 'c', 'u', '6443', 'z']
[EX A]:
323