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:
4, 19, ['o', 'C', 'M', '9251', 'V', '369', '2559', 'w', '5883', 'u', 'b', 'x', '9009', '2981', '2803', 'F', 'j', '2593', 'p', 'D', '8019', 'M', 'W', '7003', 'D', 'B', '9037', 'h']

Ex Output:
p3952jF308218929009xbu3885w9552963V1529


Ex Input:
1, 18, ['4729', '2591', '5309', 'L', 'F', '4977', 'I', 'E', '189', 'g', 'T', '3251', 'O', 'Z', '511', 'd', 'L', 'w']

Ex Output:
wLd115ZO1523Tg981EI7794FL903519529274


Ex Input:
4, 25, ['1125', '8427', 'u', 'V', '2645', '9745', 'N', '9867', '6901', 'w', '2063', 'x', '4053', '4309', '4861', '3137', 'Z', 'F', 'w', '3341', 'c', 'G', '9115', 'R', '3507']

Ex Output:

7053R5119Gc1433wFZ7313168490343504x3602w10967689N54795462V