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, 15, ['769', 'd', 'O', '2955', 'G', '7099', 'K', '5181', '9481', '3919', 'I', 'x', 'R', '261', 'H']

7099K518194813919IxR261H