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, ['b', '9527', '99', '1893', '7375', '2271', '5177', 'u', '6721', 'S', 'C', 'i', '1327', 'T', '6561', 'U', 'X', '9803', 'j', 'q', 'y', 'n', 'F', '2677', 'A']

6561UX