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:
4, 15, ['493', '873', 'A', '5191', 'M', '9949', '3027', '3633', 'E', '8037', 'U', '5273', 'g', 'G', '6167', 'a', '61', 'U', '2005', '5249', 'y', '5573']
answer:
6167Gg5273U8037E363330279949M5191


question:
4, 7, ['H', 'I', 'B', '6833', 'a', '7477', '8817', 'd', '4545', '779', 'F', '3265', '1819', '9317', '879']
answer:
88177477a6833


question:
2, 16, ['H', '5111', '5781', 'C', 'h', 'G', '8419', '4627', 'h', 'r', '5167', '7473', '9463', '7119', 'K', '2857', 'e', '8327', '4103', '8751', '6645', '9933', '4807', 'J', 'E', '2243']
answer:

2857K7119946374735167rh46278419GhC57815111