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:
2, 5, ['n', '8897', '6611', '2857', 'p']
answer:
p758211667988


question:
7, 14, ['j', '2199', '6995', 't', 'U', 'C', '1589', '7061', '851', 'N', '7923', '7387', '2053', 'L', 'y', '3685', 'X', 'C', '4679', '3691', '2991', 'f']
answer:
L350278373297N15816079851


question:
8, 26, ['P', '8583', '6615', '245', 'h', '4415', '7945', '145', '7057', '837', '8319', 'Q', '5153', '4657', 'u', 'G', '3181', '227', 'r', '9249', '2531', 'y', '6765', '5165', '9831', '8883', '4879']
answer:

3888138956155676y13529429r7221813Gu75643515Q91387387507541