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: 4, 9, ['R', 't', 'Z', '4199', '2535', '6621', 'b', 'P', 'M', 'c', '2789']

419925356621bPM