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: 4, 15, ['745', '8361', 'f', '7835', '503', '2525', 'b', '1511', 'z', 'f', 'x', 'l', 'H', '9923', 'w']

78355032525b1511zfxlH9923w