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: 5, 11, ['D', '4371', 'v', 'H', '5401', '2611', '4877', '8475', 'P', 'U', 'X', 'w', 'T', 'B', 'g', 'p', 'c', '5639', '1087', 'K', '737', 'E']

5401261148778475PUX