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, 5, ['1803', 'T', 'u', '1089', '5655']

Ex Output:
55659801


Ex Input:
1, 4, ['3633', 'k', '9685', 't']

Ex Output:
t5869k3363


Ex Input:
5, 19, ['V', 'k', '8289', 'X', '3185', 'v', '7387', 'u', 'V', '5539', '9655', '2171', '7603', 'p', 'Z', 'K', '4131', '2011', '7395', '1471', '4961', 'w', '7521', '171', '5075', 'U']

Ex Output:

593711021314KZp3067171255699355Vu7837v5813