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, 13, ['i', '3057', 'w', 'f', '2887', '3447', 'N', '9931', '7625', 'w', 'y', '5991', 'X', 'G', '813', 'v', 'o', '3117']

5991X