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, 13, ['5021', 'E', '6019', 'U', '8605', '1751', 'f', '4373', '4537', '3443', 'g', 'h', 'v']

U86051751f437345373443ghv