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: 19, 20, ['s', '2571', 'q', '2397', 'T', '3995', 'W', 'f', '7847', 'w', 'b', 'X', '5027', 'z', 'I', '9187', '2715', '9005', 'K', 'h', 'A']

Kh