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, 19, ['t', '6245', 'q', '2135', '7133', '6249', '879', 'B', '3083', '1361', '5073', '8359', '1929', '1769', 'r', '4581', 'M', '7587', '4841', '5287']

879B308313615073835919291769r4581M75874841