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: 5, 7, ['193', 's', '6617', 'a', 'Y', 'e', '8931', '9801', '3025', '4753', 'c', 'n', '6923', '3925']

SOLUTION: 1398eY

PROBLEM: 4, 5, ['3001', '661', 'S', 'N', '7919']

SOLUTION: 9197N

PROBLEM: 1, 14, ['l', 'l', '7551', '3767', 'y', '8719', 'D', '9731', 'B', '8007', 'n', 's', '3191', 'u', 'Y', 'a', 'W', 'f', '9869', 'Q', 't', '6785', '873', 'Y', 'D', 's', 'H', '893', 'K']

SOLUTION:
u1913sn7008B1379D9178y76731557ll