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, 27, ['z', '7203', 'd', '1795', '45', '1803', 'L', '2839', '6285', 'W', '1969', 'x', '6565', '8849', '6091', 'M', '7925', '37', 'h', '381', '59', 'O', '3283', 'u', '9831', 'Y', '5701', '7249', 'w']

Ex Output:
1075Y1389u3823O95183h735297M190694885656x9691W


Ex Input:
1, 12, ['6893', 'o', '2661', 'T', 'w', 'u', 'k', '7727', 'X', '9861', '9125', 'o', 'x', '9109']

Ex Output:
o52191689X7277kuwT1662o3986


Ex Input:
2, 4, ['p', 'O', 'f', '7383', '3191', 'Q', 'Z', 'R', 'y', 'O', '2363', 'e', '8989', '5413', 'r', 'x', '9259', 'q']

Ex Output:

3837fO