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: 4, 4, ['675', 'e', 'A', 'H', 'O', 'E', 'g', 'j', 'j', '5167', '2367', 'u', 'E', '753', 'M']

Answer: H


Question: 2, 18, ['8671', 'd', '5109', '1915', 'h', '2777', '3087', '9861', '8597', 'P', '4505', 'j', 'M', 'O', 's', 'Q', '2703', 'X', 'l', 'g', '1801']

Answer:
X3072QsOMj5054P7958168978037772h51919015d