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]: 8, 8, ['n', '9001', 't', 'e', 'W', '2287', 'f', '2735', 'z', '3065', 'J', '5609', 'e', 's', 'F']
[EX A]: 5372

[EX Q]: 1, 3, ['4101', '9767', 'q', 'Z', '6853', '3643']
[EX A]: q76791014

[EX Q]: 5, 6, ['G', '8333', 'y', '3889', '9603', 'e', '5411', 'H', 'T', '615', 'u', 'H', '225', '2979', 'g']
[EX A]:
e3069