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:
2, 3, ['T', '9003', '3731', '287', '7101', 'm', '2147', '6123', '6319']

Ex Output:
13733009


Ex Input:
5, 5, ['7991', '8029', '9605', 'u', '9539', 'q', '3789', 'i', '8639', '7477']

Ex Output:
9359


Ex Input:
1, 3, ['4523', '3909', 'V', '7275', '5721', '6113', 'G', '5319', '3519']

Ex Output:

V90933254