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:
14, 17, ['7891', 'n', '3475', 'c', '3281', 'Y', 'R', '5745', '4195', 'c', 'r', 'D', '7707', 'V', '7313', '8857', '1849', '5591', '553', '8389', '3833', 'm', 'v', '3663', 'k', 'U', 'o', 'p']

Ex Output:
948175883137V


Ex Input:
2, 5, ['l', 'E', '729', 'U', 'z', '9729', '3247']

Ex Output:
zU927E


Ex Input:
5, 15, ['6431', '7993', 'n', 'Y', 'y', '7479', 'f', 'Z', 'D', '3229', '9495', '601', 'Z', 'V', '7457', 'w', '5991', 'L', 'N']

Ex Output:

7547VZ10659499223DZf9747y