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, 10, ['2669', 'p', 'O', 'u', '9431', 'M', 'J', 'f', 'Q', '8213', 'i', '45', '545', '631', 'K', 'L', 'L', '7873', 'Z', 'm']

MJfQ8213