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, 15, ['9991', '7119', 'x', '6769', 'r', 'i', 'j', 's', '6449', 'j', 'M', '245', '4129', 'B', 'T', '4827', '9543', 'd', 'l', '1125', 'J', '6057', '1241', '2027']

rijs6449jM2454129BT