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:
1, 10, ['X', '3687', 'p', '973', '7395', 'T', '9981', 'J', '261', 'V', '8571', 'I', '7911', 'F', 'K', 'J', 'T', 'F', '2249', '2975', 'D', '6279', '1529', '2957', 'y', '5285', 'X', 'v', '8115']

Ex Output:
V162J1899T5937379p7863X


Ex Input:
3, 11, ['B', 'V', 'S', '7211', 'U', '7773', '4803', 'z', '9371', 'l', 'S', '1559', 'l', '9203', '9919', 'M']

Ex Output:
Sl1739z30843777U1127S


Ex Input:
18, 18, ['F', 'A', '8381', 'u', 'w', 'G', 'd', 'L', 'Y', '1237', '1085', 'q', 'U', 'v', 'e', 'y', '3205', '3765', 'C', 'P', 'i', '3039', 'l', 'W', '8705', 'l', '7789']

Ex Output:

5673