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, 12, ['6299', '3701', 'z', 't', 'r', 'e', '9563', 'R', '431', 'A', 'u', '4051', '293', 'd', 'L', 'Y', 'U', 'g', 'S', 'b', 'q', 'u']

e9563R431Au4051