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: 11, 18, ['m', '1691', '4693', 'J', '2377', 'T', 'H', '6049', 'm', '7821', '7697', '1723', '4689', 'O', '3119', '5587', '1473', '1935', '3423', '6227', 'O', '9647', 'M', '4985', 'W', 'u']

769717234689O3119558714731935