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:
2, 7, ['9065', 'Q', 'L', 'U', '6289', '1915', '1747', 'a', 'N', '9259', '4713', '7959']
answer:
747151919826ULQ


question:
13, 13, ['1575', 'D', '1335', '2335', 'D', '9893', 'U', 'j', '5145', '6041', '2655', 'r', '5243', '8745', '7439']
answer:
3425


question:
3, 8, ['b', '8977', '3013', '3493', 'a', '7271', 'e', '9007', 'w', 'Y', '9737', 'I', '7003', '5573', 'G', 'p', 'R', '6879', 't', 'K', 'k', '6213', '9861', 'P']
answer:

7009e1727a39433103