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: 2, 15, ['Q', '7469', 'v', 'Q', 'V', 'K', 's', '6469', 'b', '3417', 'S', '7613', 'q', '371', '5351', '6897', 'X']

7469vQVKs6469b3417S7613q3715351