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:
6, 8, ['J', '4955', '3497', '8869', 'n', '2093', '6249', 'A', '8957']
answer:
A94263902


question:
6, 7, ['8123', 'G', '4941', 'Z', 'i', 'T', '3335']
answer:
5333T


question:
9, 13, ['a', 'M', '6831', 't', '6209', 'y', 'm', '9153', 'G', '2409', 'Y', '9465', '7337', '5689', 'm', '8933']
answer:

73375649Y9042G