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, 21, ['4383', '6031', '2179', '1541', '9155', '2421', 'T', '2787', '3159', '2795', 'C', '7745', 'H', 'n', '9547', '3279', 'N', 'F', 'I', 'J', '8397', 'T', '565', 'L', '453']

2421T278731592795C7745Hn95473279NFIJ8397