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:
12, 29, ['4267', '7621', 'e', 'd', '2685', '3417', 'V', 'E', '3849', '6875', '1093', '9451', '3257', '6313', 'K', 'j', '3551', 'l', 'J', 't', 'V', '7965', '307', 'A', '3733', 'Y', '8649', '8475', 'X']

Ex Output:
X57489468Y3373A7035697VtJl1553jK313675231549


Ex Input:
1, 4, ['6193', '5871', '9871', '4821']

Ex Output:
1284178917853916


Ex Input:
6, 22, ['1079', 'j', 'Q', '7845', '2259', 'z', '6177', 'm', 'D', '3', 'Z', '7935', '3239', 'q', 'E', '4659', '3289', 'k', 'R', '2963', 'u', 'r', '4283']

Ex Output:

ru3692Rk98239564Eq93235397Z3Dm7716z