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, 9, ['C', 'V', '9945', 'W', 'R', 't', '471', 'Y', 'F', '2445', 'd', 'R', 'l', 'f', '5041', 'm', '7347', 'j', '6257']

Ex Output:
FY174tRW5499VC


Ex Input:
2, 11, ['7391', '6663', '477', '4991', '1033', 'c', 'X', 's', '2517', 'i', 'M', '8437', 'J']

Ex Output:
Mi7152sXc330119947743666


Ex Input:
7, 14, ['1775', '1167', '9429', 'v', '8785', '2829', '3237', '5117', '2091', 's', '5003', 'o', 'd', '1561', 'J', 'q', 'L', 's', '941', 'k', '8401', 'N', '7863', 'q']

Ex Output:

1651do3005s190271157323