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:
2, 5, ['Y', 'O', 'Q', 'l', 'E']

Ex Output:
ElQO


Ex Input:
3, 8, ['w', '7571', 'o', '235', 's', 'n', '3941', '6357', '3251', 'G', '5961', 'z', 'N', '5029', '7589', '3993', '5087', '6351', '5799', '1943', '7661', 'S']

Ex Output:
75361493ns532o


Ex Input:
18, 23, ['m', '3453', '1583', 'X', '2245', '485', 'b', 'T', 'L', '933', '2809', '6047', '8589', '6541', '9399', '9505', '7981', 'T', 'p', '3603', 'K', 'g', '8661', '6703', '7011', 'o']

Ex Output:

1668gK3063pT