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, 8, ['O', '4833', '7055', '9891', '9117', '1571', 'S', 'Z', '7741', 'W', 't']

Ex Output:
ZS17517119198955073384


Ex Input:
1, 5, ['M', 'H', '7813', '6149', 'u', 't', '3643', '5901', 'A', 'g', '3929', 'V']

Ex Output:
u94163187HM


Ex Input:
11, 12, ['3663', 's', '1351', 'C', 'l', 'n', 'w', '13', '5307', 'K', '9727', 'l', '5743', 'j', '715', 'S', '137', 'C', 't', '7533', '6295', '5367', '6717', 'O', '3321', '5019', '3449', '8935', 't']

Ex Output:

l7279