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:
14, 16, ['3661', '8985', 'X', '193', '3329', 'B', '843', 'r', '8273', '9019', '5771', '7523', 'U', 'i', '2029', '4953', '3071', 'Z']

Ex Output:
35949202i


Ex Input:
5, 7, ['Y', '5101', 'B', '5129', 'a', 'y', 'v', '4577', '5455', '6685', '6435']

Ex Output:
vya


Ex Input:
8, 19, ['3827', '7605', '9431', '7291', '2353', '3349', 'j', 'u', 'E', 'K', 'U', '1871', 'i', 'Y', '8167', '3625', '765', '3131', 'x', 'Z', '9581', 'M', 'P', 'F', 'u', '339']

Ex Output:

x131356752637618Yi1781UKEu