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.

4, 4, ['I', 'i', 'b', '2703']
3072

2, 3, ['2923', 'F', '4033', 'V']
3304F

3, 19, ['6491', 'N', '2689', '917', 'W', 'l', 'b', '8823', '4557', '1447', 'e', 'E', 'R', 'P', '6299', '7593', 's', 'F', '3881', '5673', '1301', '3687', '221', '2239', 'L', 'X']

1883Fs39579926PREe744175543288blW7199862