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:
5, 16, ['8475', 'y', 'z', 'M', '7495', 'p', '6073', '1545', '9065', '8957', 'z', 'Y', '863', '4153', '3381', '5513', 'K', 'H', '4083', '6175', 'H', '6463', 'G', '5217', 's', 'c']
answer:
315518333514368Yz7598560954513706p5947


question:
22, 29, ['7033', 'L', '8085', '9405', 'w', '9699', 'Y', 'w', 'J', '5543', '3967', 'B', '7289', '2385', '9123', 'M', 'o', '3055', 'b', '7955', '5857', 'N', 'l', '5075', 'H', '6681', '3289', '2135', '3593']
answer:
3953531298231866H5705lN


question:
2, 20, ['4165', 'Z', '6051', 'R', '6057', '2125', '4987', '8423', '6223', 'T', '9089', '8505', '6035', 'q', 'n', '3349', 'b', 'K', 'I', 'Q', 'V', '983', 'e', 'D', 'G', 'z', '8387']
answer:

QIKb9433nq530650589809T32263248789452127506R1506Z