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: 4, 7, ['C', 'j', 'F', '495', 'H', '6595', 'h', '7567', 'f']

SOLUTION: h5956H594

PROBLEM: 1, 2, ['735', 'W', '5879', '8259']

SOLUTION: W537

PROBLEM: 3, 7, ['7835', 'q', '9439', 'l', '5657', 'p', '5247', 'W', 't', '7227', 'H', 'x', '6559']

SOLUTION:
7425p7565l9349