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: 18, 22, ['I', '4687', 'V', 'y', 'U', '2255', '6971', '793', 'W', 'O', '3233', '5061', '6355', 'X', 'U', '8435', 'e', 'z', 'u', '6055', 'd', '1493', 'e', '4453', 'X']

SOLUTION: 3941d5506uz

PROBLEM: 2, 2, ['4359', 'G', 'A']

SOLUTION: G

PROBLEM: 4, 11, ['1391', '9255', 'Z', 'I', '4025', 'v', 'F', 'M', 'Q', 'K', 'Y', '895', 'k', '1119', 'W', '5113', 'E', 'g', 'S', 'e', '2067', 'R', 'I', 'W', 't']

SOLUTION:
YKQMFv5204I