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: 1, 6, ['2901', 'L', 'c', 'b', '3387', 'm', 's', 'R', 'J', 'b', '121', '5401', 'U', 'N', '8239', 'O', 'X', 'j', '5863', 'g', '8883']

2901Lcb3387m