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, 8, ['X', 'I', '9323', 'A', 'v', 'd', '7685', 'Z', 'p']

Ex Output:
Z5867dvA3239IX


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

Ex Output:
V90933254


Ex Input:
3, 9, ['y', '7165', '9649', 'K', 'R', '1411', 'a', '8781', '3279', '6411']

Ex Output:

97231878a1141RK9469