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:
4, 9, ['d', '1057', '5737', '6925', '6365', 'y', 'w', '6535', 'P', 'F']
answer:
P5356wy56365296


question:
1, 3, ['4101', '9767', 'q', 'Z', '6853', '3643']
answer:
q76791014


question:
1, 2, ['t', '1143', '4747', 'E', 'v', 'L', '451', '7367', 'O', 'T']
answer:

3411t