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.

1, 1, ['341', '939']
143

2, 7, ['9065', 'Q', 'L', 'U', '6289', '1915', '1747', 'a', 'N', '9259', '4713', '7959']
747151919826ULQ

13, 15, ['8967', '4513', '4479', 'l', '8097', '8883', '4297', '6621', 'a', '9753', 'l', '8531', '967', '9399', '8379', 'Z', 'g', '8389', '4109', 'W', 'r', 'h']

97389939769