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 Input:
3, 4, ['4887', 'N', 'y', '2813', 'C', 'J', 'v', '3199']

Ex Output:
3182y


Ex Input:
16, 16, ['7539', 'A', '8589', 'T', 'Q', 'u', 'z', 'A', '9751', '2913', '7453', '5649', 'Q', 'H', 'Z', 'O', 'v', 'V']

Ex Output:
O


Ex Input:
9, 22, ['C', 'p', 'M', 'O', 'z', '9673', 'h', '1335', '8971', '1101', '9211', '4279', '6425', '6417', 'D', 'y', '5663', 'n', 'G', 'Q', '7283', 'D']

Ex Output:

D3827QGn3665yD714652469724112910111798