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, 4, ['I', 'i', 'b', '2703']

SOLUTION: 3072

PROBLEM: 9, 13, ['4635', '9581', '9269', 'A', '4887', 'V', '1767', '9267', 'T', '1895', '4941', 'q', '5979', '501']

SOLUTION: 9795q14945981T

PROBLEM: 16, 28, ['4085', 'e', 'o', 'l', 'l', '1565', 's', 'C', 'c', 'x', '1333', 'T', '9355', 'h', '2173', '7459', '5597', 'X', 'r', '9685', 'W', '8415', 'M', '4943', 'A', 'B', '6421', 'X']

SOLUTION:
X1246BA3494M5148W5869rX79559547