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: 3, 6, ['6663', '3889', '2563', 'r', '7649', '845', '893', 'H', 'N', 'O', 'L', '779', '3375', 'O']

2563r7649845