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.

Ex Input:
3, 10, ['9543', '2797', '3939', '8207', '329', 'l', '5353', '8849', '5579', '7445']

Ex Output:
5447975594883535l92370289393


Ex Input:
16, 26, ['d', 'o', '8115', '7489', 'n', '9243', '5821', '5381', '5059', 'V', 'T', '6557', '2885', '721', '3867', '5941', '7613', '2933', '253', 'l', '7339', '3743', 'U', '7921', 'Q', '2077']

Ex Output:
7702Q1297U34739337l352339231671495


Ex Input:
6, 19, ['3803', 'Q', 'J', '203', '7465', '8973', '4225', 'D', 'v', '1735', '1849', '6535', 'r', 'n', '5325', '841', '171', '3333', 'D', 'I', 'b', '2159', '9657', 'n', '3307', '4409']

Ex Output:

D33331711485235nr535694815371vD52243798