You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

1, 3, ['238', 'h', '92', 'U', '2799']
Solution: 29h832
Why? Here, concatenating all the elements between the 1st element and 3rd element and then reversing the string gives '29h832'.

New input: 13, 18, ['1653', '4263', 'F', '3283', '669', '5355', 'p', 'y', '5303', '9607', '7593', 'e', 's', 'X', 'u', '1277', '5339', '5431', '4599', '8109']
Solution:
134593357721uXs