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, 6, ['m', '3629', 'j', 'Q', '3439', 't', 'm', '795', 'd', '5433', 'b', 'k', '9865', '7719', 'Q', '3721', 'W', '2021']

m3629jQ3439t