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.

Q: 10, 19, ['6733', 'q', '2197', 'h', '9975', '3059', 'e', '8475', '281', 'L', '9119', 'B', '8857', 'U', 'R', 'h', 'e', 'J', 'P', 'l']

A: PJehRU7588B9119L
****
Q: 3, 4, ['3097', 'E', '4255', '1665', '7179']

A: 56615524
****
Q: 16, 22, ['6249', '6731', 'u', '5035', 'g', '7039', '403', '7917', 'a', '4975', 'p', '6175', 'k', '7545', 'I', '5605', '9577', '1063', '593', 'f', '757', '3475', 'r', '1395', '4021', '1169']

A:
5743757f395360177595065
****