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:
4, 9, ['d', '1057', '5737', '6925', '6365', 'y', 'w', '6535', 'P', 'F']

Ex Output:
P5356wy56365296


Ex Input:
2, 10, ['V', '7549', '4639', '3825', '4619', 'w', '7667', '557', 'L', 'z', '1883', 'k', 'j', 'o', 'p', '3945', 'u', 'l', '5637']

Ex Output:
zL7557667w9164528393649457


Ex Input:
8, 10, ['M', 'z', 'a', 'Z', 'E', '7385', '4025', '6663', '7591', '4257', 'n', 'V']

Ex Output:

752419573666