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: 2, 18, ['R', 'z', '9827', '2043', 'W', 'p', '2435', '211', 'p', 'G', 'P', '221', 'I', '4739', '1415', 'a', '8053', 'C', '8011', '7793', 'g', 'W', 'E', '9629']

C8053a14154739I221PGp2112435pW20439827z