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]: 9, 9, ['5503', 'f', 'g', 'B', '3003', '229', '4613', 'C', 'j', 'o']
[EX A]: j

[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]: 10, 15, ['2781', 'y', 'U', 'g', 'L', 'e', 'b', '3739', 'z', 'V', 'd', '5813', 'Q', 'V', 'N', 'S', 'p', 'f', '8087', 'r', 'V', 'A', '9571', 'O', 'Q', '1177', '4653', 'z', '7357']
[EX A]:
NVQ3185dV