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:
5, 12, ['9227', 'P', 'T', 'k', 'p', '9785', '2047', 'M', '827', '2815', 'C', '7071', 'Y', 'y', '3657', '9961', 'o']
answer:
1707C5182728M74025879p


question:
2, 5, ['f', 'd', '2691', 't', 'u']
answer:
ut1962d


question:
3, 10, ['E', '3449', '5751', '8309', '3817', 'N', '3779', '5121', '3715', 'w']
answer:

w517312159773N718390381575