instruction:
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.
question:
2, 8, ['7283', '1463', 'A', '6121', 'H', '173', '8829', 'V']
answer:
V9288371H1216A3641


question:
2, 2, ['9085', '5983', '3197', 'C']
answer:
3895


question:
3, 7, ['P', 'P', 'H', 'r', '3563', 'n', 'M', '1577', '6453']
answer:

Mn3653rH