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, 2, ['t', '1143', '4747', 'E', 'v', 'L', '451', '7367', 'O', 'T']
answer:
3411t


question:
5, 5, ['8095', 'D', '9477', '9307', '9355', 'U', 'y', '5197', '2691', '3061']
answer:
5539


question:
4, 17, ['9499', '6013', 'x', 'J', 'g', 'F', 'N', 'r', 'q', 'o', 'n', 'h', '607', 'h', '6997', '6973', '9129', 'L', '387', '9173', '6733', '4279', '1441', '4897', 'Z']
answer:

921937967996h706hnoqrNFgJ