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, 20, ['4063', 'E', 'U', 'I', '4943', '2645', 'G', '9493', '3141', 'z', '9381', 'W', 'A', 'J', 'q', 'A', '5', 'e', '6009', 'v']

e6009v