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.

1, 9, ['C', 'V', '9945', 'W', 'R', 't', '471', 'Y', 'F', '2445', 'd', 'R', 'l', 'f', '5041', 'm', '7347', 'j', '6257']
FY174tRW5499VC

5, 7, ['B', '7943', 'H', 'E', 'p', 'D', 'L', '625', '2757', '4429', '863', 'z', 'l', 'f', '3467', 'X', '4961', 'T', 'k', '1021', 'T', '2249', 'S', 'D']
LDp

4, 5, ['2773', 'H', 'y', '4487', '5427', '5397', 'y', 'S', '2639', '3749']

72457844