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: 15, 15, ['9129', '5105', 'g', '4363', 'U', 'V', '5105', 'x', '935', '5853', '8581', 'a', '731', 'L', '9007', 'D', '8221']

9007