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, 15, ['7421', '1039', 'K', '5687', 'A', '153', 'Z', '6521', '3865', 'E', '9597', '205', '7879', 'T', '7447', 'T', 'o', 'D', '4427', 'D', 'P', 'b', 'w', '2307', '111']

74211039K5687A153Z65213865E95972057879T7447