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, 8, ['R', '5033', '8501', '6619', 'b', '4779', 'r', '9139', 'I', '8699', '113', '6799', 'q', 'U']

4779r9139