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.

Q: 5, 7, ['Y', '5101', 'B', '5129', 'a', 'y', 'v', '4577', '5455', '6685', '6435']

A: vya
****
Q: 2, 14, ['8035', 'N', 'R', 'U', '5691', 'j', '5635', 'c', '3641', 'K', '6871', '8663', '7525', '4031', '5395', 'r', '7549', '3023', 'Y', 'V', '1351', '2397']

A: 1304525736681786K1463c5365j1965URN
****
Q: 9, 20, ['6855', 'i', 's', '6589', 'N', '6893', 'D', '2635', '8469', '8221', '4289', '8619', '3129', '5801', 'G', '5425', 'J', '5597', 'q', '8709', '4711', 'X', '393', 'E', 'x']

A:
9078q7955J5245G108592139168982412289648
****