instruction:
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.
question:
1, 1, ['4865', 'y']
answer:
5684


question:
6, 8, ['u', 'y', '5599', 'i', 'Z', 'F', '8907', 'A', 'l', '8821', 'B', 'G', 'd']
answer:
A7098F


question:
14, 25, ['E', '4473', '2709', '6423', '5043', 'x', 'I', 'D', 'F', 'k', 'j', 'a', 'Y', '2131', '9777', '4117', '513', '1863', 'H', 'e', 'M', '5063', 'e', 'g', 'M']
answer:

Mge3605MeH3681315711477791312