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: 8, 18, ['2439', '1273', '2119', '3909', 'l', '8235', '1703', '2465', 't', 'y', 'T', 'F', 'd', 'I', 'Y', '963', '3531', '9123', 'L', '5445', 'C', '2975']

2465tyTFdIY96335319123