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, 6, ['1467', 'm', '9771', '6533', 'm', 'x', 'c', 'd', '3139']
answer:
xm33561779m


question:
7, 8, ['9287', 'V', 't', 'W', 'W', 'w', 'N', 'T', 'Y']
answer:
TN


question:
10, 11, ['A', '9305', '9003', '2341', '6851', '9463', 'd', '6785', '7701', 'f', '1787', '6985', '1291', '8039', 'k', '4047', 'o', 't']
answer:

7871f