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, 4, ['619', '9623', '5589', 'r', 'Z', '3065', 'p', '9567', '5065', '8433', '2807', 'b', '8271', 'k']
[EX A]: r98553269916

[EX Q]: 2, 5, ['f', 'd', '2691', 't', 'u']
[EX A]: ut1962d

[EX Q]: 2, 9, ['4185', '1697', '4595', '8319', 'p', 'R', 'z', 'E', 'h']
[EX A]:
hEzRp913859547961