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: 6, 8, ['969', 'H', 'I', 'W', 's', '9645', 's', '6533', '1827', '8235', 'J', 'f', '187', 'p', 'B']

9645s6533