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: 8, 15, ['7149', '3977', '4587', 'g', '8697', '609', 'o', '2639', 'e', 'J', '771', '2609', 'F', '6109', '6405', '7513', 'L', 'x', '3375', 'c', '7205', '6647']

2639eJ7712609F61096405