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: 6, 20, ['a', '3487', '5723', '6285', '2519', 'M', '5283', 's', 'O', '7961', '4023', '2721', 'V', '7811', '2535', '5017', 'r', 'y', '1769', 'g', 'Z', 'o', '2377', 'P']

M5283sO796140232721V781125355017ry1769g