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: 3, 3, ['x', 'v', 'p', '4337', '635', '8927', 'B']

SOLUTION: p

PROBLEM: 1, 12, ['2851', 'v', '8871', 'Z', '2227', 'm', 'z', 'B', 'v', '765', '1435', 'V', 'X', 'k', '5955', '2549']

SOLUTION: V5341567vBzm7222Z1788v1582

PROBLEM: 8, 12, ['1119', 'k', 'R', 'o', 'H', 'c', 'p', '4205', '7643', '8023', 'v', 'j']

SOLUTION:
jv320834675024