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: 1, 3, ['a', '8801', '2379']

SOLUTION: 97321088a

PROBLEM: 10, 11, ['6929', 'l', '8541', 'L', '7495', '7707', '8839', '6687', 'L', '5125', 'd', 'F', '7', '4357', 'w', 'R', '2459', '9871', 'E', '299', '5967', 'T']

SOLUTION: d5215

PROBLEM: 7, 11, ['8321', 'K', 'V', '8983', 'v', 'q', '3389', 'm', '4369', '3197', 'W', 'b', '7135', '939', '2655', '2437', 'i', 'S', 'G', 'l', '6667', '9473', '5499', 'P', 'A']

SOLUTION:
W79139634m9833