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: 5, 12, ['Q', 'A', '9491', '303', 'f', '2997', '2607', 'T', '5497', 'U', '7975', 'z']

f29972607T5497U7975z