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, 12, ['b', 'l', 'B', 'n', 'B', '5095', 'x', 'U', 'J', 'A', 'W', '2219', '8775']

blBnB5095xUJAW2219