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, 1, ['g', '3127', 'O']
g

1, 18, ['4729', '2591', '5309', 'L', 'F', '4977', 'I', 'E', '189', 'g', 'T', '3251', 'O', 'Z', '511', 'd', 'L', 'w']
wLd115ZO1523Tg981EI7794FL903519529274

3, 21, ['5185', 't', 'G', 'h', 'x', 'h', '8757', '3019', 'k', 'L', 'U', 'A', '4677', 'M', 'c', 'X', 'm', 'E', 'L', 'd', 'd', '23', 's', '6295', '3881', '5659', '1207']

ddLEmXcM7764AULk91037578hxhG