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:
1, 7, ['4177', 'T', 'Q', '915', '7823', 'm', '6453']

Ex Output:
3546m3287519QT7714


Ex Input:
2, 3, ['T', '2161', '227']

Ex Output:
7221612


Ex Input:
29, 30, ['9521', '3253', 'v', '3523', 'W', 'o', '8219', 'K', '7051', 'N', 'z', '1109', 'M', '161', 'p', '7655', 'v', 'S', '2235', '9201', 'u', 'v', '3373', '1211', '7893', '1901', 'S', 'z', '1759', 'D']

Ex Output:

D9571