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.

2, 5, ['Y', 'O', 'Q', 'l', 'E']
ElQO

4, 4, ['339', '1345', '9749', '6877', 'b', 'K', 'f', '1443']
7786

1, 3, ['8949', 'z', 'O', '9011', '5127', '7749', 'h', 'z', '5269', '4475', 'z', '4441', '1011', 'L', 'd', 'W', '3485', 'M', 'x', '3485', '4919', 'J']

Oz9498