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: 3, 11, ['5721', '1643', '6551', '7749', 'a', '7569', 'g', '847', '6151', 'a', 'B', '7515', 'u', '375', 'j', '6149', 'X', 'b', '4497']

65517749a7569g8476151aB