TASK 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.
PROBLEM: 6, 9, ['7139', 'Z', '4407', '9791', 'F', '139', '4927', 's', '4721', 'Y']

SOLUTION: 1394927s4721

PROBLEM: 14, 25, ['6133', 'K', 'D', 'E', 'M', '5757', 'r', '73', 'k', 'f', 'O', '311', 'C', 'A', '9263', 'B', '9377', 'X', '4671', 'l', 'q', 'm', 'o', '6247', 'M', '3305', '8167', '7389', 'H', '1403']

SOLUTION: A9263B9377X4671lqmo6247M

PROBLEM: 2, 9, ['n', '1891', 'B', '4607', '93', 'R', 'J', 'b', '9465', '4043', 'w']

SOLUTION:
1891B460793RJb9465