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, 14, ['G', '731', '9621', 'H', '1621', '4415', '4995', '8435', '6575', 'i', 'b', '7629', 'n', '6049', 'e', 'U']

9621H16214415499584356575ib7629n6049