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: 4, 15, ['d', 'B', 'e', 'H', 'y', '3211', 'i', '3683', '9705', '4931', 'v', '5053', 'R', 'U', '7435', '2883', '6659', '7893']

Hy3211i368397054931v5053RU7435