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: 15, 17, ['1909', '2931', 'X', 'Z', 'F', 'p', 'J', 'V', 'B', '8579', '9179', 'D', 'v', '497', '4321', 'B', 'F', 'x']

4321BF