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: 3, 12, ['Q', 'B', 'A', 'i', 'v', '2993', '1783', 'H', '4145', '6219', 'H', 'R', 'A']

Aiv29931783H41456219HR