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]: 6, 7, ['8123', 'G', '4941', 'Z', 'i', 'T', '3335']
[EX A]: 5333T

[EX Q]: 2, 17, ['781', '1949', '8017', 'I', 'F', 'k', 's', 'f', '9531', '3769', '8135', 'R', '7643', 'v', '6217', '4085', 'M', '1993']
[EX A]: M58047126v3467R531896731359fskFI71089491

[EX Q]: 3, 8, ['u', 'l', '2573', 'N', 'A', '4871', 'W', 'y', 'I', '5255', '7637', '1299', '5369', 'N', '6715', 'D', 'i', 's', '5103', 'E', 'v', 'v', '8135', '3403', 'o', 'o']
[EX A]:
yW1784AN3752