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, 12, ['H', '4429', 'j', '7847', 'U', 'L', '1213', 'T', '9895', 'J', '4753', '8431', 'M', 'Z', '849']

7847UL1213T9895J47538431