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: 13, 16, ['f', '9455', '6463', 'F', 'M', '1713', '255', '2197', '8647', 'p', '3719', 't', 'q', '8231', 'd', '623', '5517', 'c', 'a']

q8231d623