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, ['3909', '5863', '707']
[EX A]: 36859093

[EX Q]: 11, 14, ['c', '6897', 'S', 'J', 'F', '5099', 'b', 'M', 's', 'h', '7725', '3313', 'a', 'o', 'p', '2135', 'I', 'E', 'G', '2273', '9799', '1027', '3431', '6795', 'o', 'k', '3559', 'd']
[EX A]: oa31335277

[EX Q]: 4, 7, ['7251', '1759', '4653', '3127', '1245', '4421', '9135', '8679', '5809', 'B', 'V', '6735', 'T', 'B', '5827', '4745', '6991', 'M']
[EX A]:
5319124454217213