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:
22, 23, ['9853', '3839', '2279', 'o', 'Y', '6513', '4505', '1861', 'm', '8009', 'i', '8855', '6777', '3055', '4055', '3903', '5639', 'y', '579', '7271', '8021', 'R', '4547', '1439', '29', '1611', 't', '6279']

Ex Output:
7454R


Ex Input:
8, 19, ['r', '7451', 'X', 'l', 'S', 'v', '4807', '4851', '8849', '3993', 'w', 'Z', '1419', '9185', 'N', '2285', '13', 'm', 'd', 'Y', 'j']

Ex Output:
dm315822N58199141Zw399394881584


Ex Input:
21, 23, ['5463', 'Z', 'b', '3395', 'w', 'R', 'Q', '8559', '6597', '7597', '7693', '8481', 'O', 'U', '9569', 'l', '347', 'z', '5143', 'r', '6451', '831', '4853', '2819', '6547', '1475']

Ex Output:

35841381546