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: 12, 15, ['W', 'c', '509', '9653', 'f', 's', '6871', '8581', 'b', '1845', 'A', '8341', 'N', 'n', '5437', '261', 'p', '905', 'p', 'L', 'i']

8341Nn5437