Definition: In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
Input: 8, 12, ['H', 'p', '9355', 'w', 'x', '1679', '5999', 'A', 'Z', '3473', '721', 'i', '9969', '5251', 'C', 'V', '6363', '8711']

i7213473ZA