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: 21, 23, ['D', '2019', 'y', '4417', '7849', 'Z', 'k', 'w', 'A', 'S', 'g', '4319', '849', 'D', 'd', 'S', 'o', '4687', 'L', '1849', '29', 'G', '6205', '7789', 'G', 'y', '4197', 'k']

29G6205