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:
10, 10, ['Z', 'Z', '2205', '7113', 'G', 'k', '973', 'I', 'n', '415', '1505']

Ex Output:
514


Ex Input:
8, 15, ['l', 'p', '7691', 'q', '5663', '41', 'P', '2779', '7265', 'V', '4931', '8979', 'l', 'l', 'l', '45', '1245', 'F', '1139', '3531', '5337', '369', 'g', 'Q']

Ex Output:
lll97981394V56279772


Ex Input:
11, 12, ['Z', '4361', 'b', 'k', '1549', '2889', '6771', '7199', 'W', 'f', '7981', 't', 'Y']

Ex Output:

t1897