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, 14, ['1419', 'P', '551', 'x', '443', 'x', '1887', 's', '4055', '6829', 'C', '4791', '9225', 'z', '5795', '8561', 't', 'g', '1839', 'y', 'x']

x1887s40556829C47919225z