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: 14, 19, ['7799', 'K', '953', '713', 'i', 'Q', '4987', '2843', 'h', 'T', '1049', 'q', '5067', 'j', 'I', 'f', '7749', 'H', 'U', 'S']

jIf7749HU