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: 6, 12, ['4749', '7789', 'c', '2009', 'y', '3097', 'F', '2379', 'o', 'X', '6615', '3431']

3097F2379oX66153431