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: 18, 27, ['n', 'I', 'z', '9397', '7789', 't', '4803', 'v', 'm', '589', 'B', '3653', '7979', 'z', '9323', 'c', 'L', '5189', 'b', 'd', '6183', 'a', '2311', 'B', 'U', '8407', '1451']

5189bd6183a2311BU84071451