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: 5, 13, ['f', '7001', 'E', '5191', '8219', '3187', '6769', '4221', 'U', 'K', '9245', 'r', 'J']

8219318767694221UK9245rJ