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: 2, 3, ['4601', '1107', 'R']

SOLUTION: R7011

PROBLEM: 4, 9, ['g', '6285', 'B', 'l', '5153', 'n', '9751', 'X', 'w', '2291', 'S']

SOLUTION: wX1579n3515l

PROBLEM: 6, 8, ['q', '9125', '9853', 'F', 'e', '2307', '1309', 'l', '9195', 'D', 'u', 'j', '7371', 'n']

SOLUTION:
l90317032