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, 7, ['F', '6715', 'F', '903', 'X', '7751', '5847', 'P', 'N', 'L', 'o', 'q']

F6715F903X77515847