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: 2, 3, ['6875', 'D', 'r']

A: rD
****
Q: 4, 4, ['339', '1345', '9749', '6877', 'b', 'K', 'f', '1443']

A: 7786
****
Q: 3, 17, ['n', '6475', '7735', '4897', 'S', 's', '669', '7315', 'U', 'f', 'M', 'n', '2419', '7969', '9785', '7635', 'Y', 'H', 'Y', 'I', 'P', 'N', '3965', 'y', '2687', 'L']

A:
Y5367587996979142nMfU5137966sS79845377
****