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: 15, 18, ['u', 'W', 'D', '607', '4111', '1207', 'N', 'T', 'Q', '7755', 'I', '9387', '6501', 't', '901', 'W', 'P', 'F', 'o', 'S', '6809', '1973', '3791', '8015', 'x', 'm', '4859', 'V', 'G']

901WPF