instruction:
In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
question:
1, 5, ['9965', 'a', 'P', 'F', '3811', '4375']
answer:
3811FPa9965


question:
8, 16, ['O', 'e', '5857', '6759', '9787', 'e', 'j', '9173', 's', '4135', 'j', 'I', 'g', 'f', '2129', 'n', '3337']
answer:
n2129fgIj4135s9173


question:
4, 21, ['6247', '259', '291', '7113', '7235', 'L', '1499', '8713', '1183', '9003', '9573', '6419', '2553', '1069', '1723', '799', 'J', 'N', '245', 'r', 'M', '5219', 'Z', '7329']
answer:

Mr245NJ799172310692553641995739003118387131499L72357113