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 Q]: 8, 19, ['r', '7451', 'X', 'l', 'S', 'v', '4807', '4851', '8849', '3993', 'w', 'Z', '1419', '9185', 'N', '2285', '13', 'm', 'd', 'Y', 'j']
[EX A]: dm315822N58199141Zw399394881584

[EX Q]: 6, 7, ['J', '701', 'm', '8837', 'b', 'd', '5911', 'y', '8031']
[EX A]: 1195d

[EX Q]: 11, 17, ['1407', '4389', '1757', '81', 'o', 'R', '7547', '4581', 'T', '3841', 'g', 'p', '29', 'a', '4669', 'f', '9411', 'H']
[EX A]:
1149f9664a92pg