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: 2, 16, ['4725', '3091', 'I', 'r', 'P', '3239', 'Q', 's', '4899', 'U', 'h', 'D', '5053', 'D', '8169', '1549', 'j', 'H', 'g', 'n', 'l', '8757']

3091IrP3239Qs4899UhD5053D81691549