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: 7, 20, ['f', '1473', 'c', 'O', '7079', '9475', '3375', '5013', 'x', 'p', '3351', '4041', '8831', '7937', 'a', 'M', '3005', 'm', 'W', '4009', 'b', 'V', '6287', 'M', '7103', 'b']

33755013xp3351404188317937aM3005mW4009