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, ['8715', '8455', '3123', '4619', 'N', '1989', '4577', '6443', 'n', 'T', 'y', '4643', 'b', 'T', '359', 'P', '4615', 'r', 'K', '8001', '3723', '6175']

6443nTy4643bT359