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 concatenate all elements of A from the ith element to the jth element, and print 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.
Input: 18, 23, ['P', '9241', 'g', 'Q', '5913', '3839', '9915', '2839', '219', 'P', '8227', 'v', 'H', 'O', '957', '3067', '6277', '1879', '4707', '7021', 'H', '7537', 'M', '2739', '9717', '4149', '4421', 'M']

187947077021H7537M