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.

6, 8, ['547', 'f', '7443', 'D', '7899', '2157', '5455', '9477', '9957']
215754559477