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, 2, ['3303', '6127']
72163033

4, 16, ['M', '1253', 'L', '1997', 'E', 'u', '4953', '1627', '4497', '1839', 'M', 's', '9821', '9159', '845', '6189', 'F', 'G', 'E', '2303', '503']
981654895191289sM9381794472613594uE7991

15, 22, ['8869', 'Y', 'U', 'x', '2549', 'p', '5689', 'J', 'P', 'm', 'r', 'u', '5001', '2307', '5237', 'O', '4889', 'S', 'o', '8803', 'j', 'm']

mj3088oS9884O7325