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, 6, ['v', 'g', '5867', '9693', 'T', 'd', 'K', 'x']
answer:
dT


question:
4, 16, ['M', '1253', 'L', '1997', 'E', 'u', '4953', '1627', '4497', '1839', 'M', 's', '9821', '9159', '845', '6189', 'F', 'G', 'E', '2303', '503']
answer:
981654895191289sM9381794472613594uE7991


question:
8, 11, ['913', 'j', '3563', 'g', '6117', '6537', '5057', 'R', 'p', '8837', '9061', 'k', '2889', 'l', 'H', 'A', 'e', '3911', '4715']
answer:

16097388pR