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, 7, ['4177', 'T', 'Q', '915', '7823', 'm', '6453']

SOLUTION: 3546m3287519QT7714

PROBLEM: 5, 6, ['A', 'v', 'x', '2047', '5955', 'l', '4845', '1347', 'i', 'm', 'W', 'h', 'w', '4483', '1509']

SOLUTION: l5595

PROBLEM: 7, 22, ['8647', 'v', '8325', '85', 'a', '5791', '7445', '549', 'J', '1185', 'U', '2995', 'K', '4579', '1723', 'K', 'S', '3915', 'T', '5873', '4289', 'z', 'r', '8577', '4857', 'M']

SOLUTION:
z98243785T5193SK32719754K5992U5811J9455447

