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, 14, ['Y', '3111', 'M', 'N', 'l', '721', 'j', '997', 'e', '353', 'd', '167', '5485', 'C', '745', 'x', 'k', '7269', '5835', 'F', 'D', 'Y', 'a', '117']
answer:
C5845761d353e799j127lN


question:
4, 9, ['6451', '9261', 's', '5587', 'D', '7595', 'D', 'E', 's', '8841', 'Y']
answer:
sED5957D7855


question:
3, 11, ['N', '4089', 'U', 'y', '7915', '5047', 'h', 'y', '8023', 'P', '7025', '2571', '4673', 'j', 'E', '3853', '5603', '4995', 'i', 'r', '9271', 'V', 'I', '6037', 'R', '8909']
answer:

5207P3208yh74055197yU