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, 19, ['t', '2317', '1043', 'e', '929', 'N', 'v', 'p', '9931', 'w', '3999', 'a', '7561', '439', 'u', '9325', '9229', '4149', '6821']

1043e929Nvp9931w3999a7561439u9325922941496821