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:
7, 22, ['3371', '4741', 's', '7429', 'z', '639', 'Q', '5679', 'e', '8039', '5323', 'C', '2901', '7629', 'D', 'y', 'C', '4333', 'P', 'v', 'A', '8171']
answer:
1718AvP3334CyD92671092C32359308e9765Q


question:
2, 11, ['p', 'T', 'Z', 'Y', '285', '1191', 'U', '5453', '4243', '9161', 'w', '5191', 'B', '7285', 'D']
answer:
w161934243545U1911582YZT


question:
6, 9, ['b', '3477', '7513', 'c', '6391', '99', '6945', '5319', '7541', '131', '3461', 'r', '5415', 'k', '4165', 'a', 'g', 'k', '4569', 'K', 'K', '2899', '7077', '3313', '5665', '1355', '1583', '5133', 'f', 'W']
answer:

14579135549699