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, 9, ['7603', '1557', 'k', 'b', '7455', '4145', 'c', '157', 'e', '265', '1977', '8165', 'F', '2639', 'B', 'c', 'w', 'X', 'u', 'v', '3835']

4145c157e