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:
3, 10, ['s', '3299', 'K', 'D', '4621', '9075', 'K', '6987', 'S', '9829', 'm', 'I', '3797']

Ex Output:
9289S7896K57091264DK


Ex Input:
6, 7, ['8123', 'G', '4941', 'Z', 'i', 'T', '3335']

Ex Output:
5333T


Ex Input:
25, 26, ['v', '1033', 'H', 'W', 'G', '5753', '1047', '5109', '6655', 'Q', '9017', '3875', 'R', '1135', '7845', '5951', 'Z', 'k', 'S', '6545', '3601', 'L', 'D', 'V', '7445', 'M', 't', '9141', 'T']

Ex Output:

M5447