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:
10, 10, ['Z', 'Z', '2205', '7113', 'G', 'k', '973', 'I', 'n', '415', '1505']

Ex Output:
514


Ex Input:
9, 18, ['k', 'p', 'h', 'h', '23', 'j', 'H', '8681', 'P', 'c', '8375', '4243', '8007', 'z', '2155', '9641', 'J', 'k', 'Z']

Ex Output:
kJ14695512z700834245738cP


Ex Input:
9, 16, ['o', '6669', '9347', 'r', '1411', '6575', '2337', 'g', '6857', 'c', 'T', '917', '5325', '1325', '5703', 'V', '5433', '3445', '9819', 'f', 'v']

Ex Output:

V307552315235719Tc7586