TASK DEFINITION: In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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'. Perform the operations in order, i.e., do not reverse first and then concatenate.
PROBLEM: 2, 2, ['w', '5569', '6229', 'b']

SOLUTION: 9655

PROBLEM: 3, 9, ['7671', '575', 'l', '989', '7015', 'X', 'x', '3543', '3771', '905', '3815', 's']

SOLUTION: 17733453xX5107989l

PROBLEM: 11, 14, ['8827', 'P', 'r', '9077', 't', '3399', '5547', 'g', '4969', 't', 'f', '4205', '5557', '5373', '905', 'Q', 'C']

SOLUTION:
373575555024f