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:
5, 7, ['u', '3017', '4149', 'z', '9231', 'C', '7461', 'e']

Ex Output:
1647C1329


Ex Input:
3, 4, ['2419', '643', '8177', '7291', '561', '6529', '4101', 'u', '6445']

Ex Output:
19277718


Ex Input:
2, 22, ['851', 'T', 'O', 'Y', 'o', '9325', '9983', 'Y', 'a', 'r', '4343', 'X', 'T', 'M', 'g', 'V', '7481', 'Q', '6517', 'a', 'P', '5613', '6819', 't', '8343', '2415', 'j', '8123']

Ex Output:

3165Pa7156Q1847VgMTX3434raY38995239oYOT