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, 13, ['F', 'K', '4279', 'R', 'K', '8067', 'Y', 'l', 'Z', '837', 'n', 'A', 'Q']

YlZ837nAQ