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.
--------
Question: 1, 2, ['E', 'W', '2117']

Answer: EW


Question: 7, 19, ['6151', 'l', 'J', 'E', '9937', 'B', '7501', '6221', 'K', '121', '7373', 'f', '2067', 'l', 'k', '3715', 'X', 'K', '7423']

Answer: 75016221K1217373f2067lk3715XK7423


Question: 8, 16, ['6701', '2573', 'S', '5573', 'p', '5519', 'M', 'V', '3463', 'p', '4153', 'X', 'i', '7481', '7531', 'w', '821', '4837', 'i', '7333', '7497', 'u', 'g', '4207']

Answer:
V3463p4153Xi74817531w