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:
6, 6, ['8655', 'L', 'F', 'l', '5817', '437', '8469']
answer:
437


question:
19, 28, ['1857', '7871', 'N', 'j', 'f', 'y', 'F', 'M', '883', 'v', '7135', 'd', 'y', 'Z', 'K', '9301', 'm', '1725', 't', '1675', '6241', 'H', '5189', 'f', '2581', 'u', '465', '3677']
answer:
3677465u2581f5189H62411675t


question:
1, 19, ['7349', '4665', '587', '1413', '1077', 'N', '4843', '1559', 'i', 'Z', 'E', 'f', 't', 'x', '1291', 'y', 'c', 'g', '7937', 'Q', '1973', '1773', 'D', '279', '6179', 'i', '1975', 'D', 'i']
answer:

7937gcy1291xtfEZi15594843N1077141358746657349