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: 2, 7, ['T', 'L', 'F', 'W', '9781', 'Y', '4499']

SOLUTION: LFW9781Y4499

PROBLEM: 3, 7, ['X', 'R', '8403', '5301', 'y', '7387', 'V', 'e']

SOLUTION: 84035301y7387V

PROBLEM: 1, 12, ['1477', '3063', 'a', 'v', 'F', 'J', '9227', '5867', 'X', '6357', '6721', 'Y', 'o', 't', '9039', '979']

SOLUTION:
14773063avFJ92275867X63576721Y