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: 4, 21, ['D', '9557', '1135', 'w', 'Q', '7463', '467', 'v', '5429', 'w', '5733', 'h', '7791', '2673', 'a', 'q', 'y', '2991', '3193', 'n', 'T', '4683', '3081', 'V', '1495', 'd', '4069']

wQ7463467v5429w5733h77912673aqy29913193nT