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: 3, 21, ['1843', '853', '9903', 'E', '4401', 'Z', 'G', '41', 'M', 'X', 'J', '8195', 'c', '571', 'q', '343', 'c', 'N', 'V', '6025', 'E', '8697', 'L', '9749', '9431', 'J']

9903E4401ZG41MXJ8195c571q343cNV6025E