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:
22, 27, ['J', '5585', '3627', '1461', 'z', 'r', 'm', '8459', '5831', 'F', 'N', 'O', '1383', 'K', 'S', '3033', 'h', '5351', '2659', 's', 'B', '8067', 'k', '7393', '7027', 'x', 'U', '6565']
answer:
Ux72073937k7608


question:
6, 16, ['T', '7203', 'J', 'O', 'h', 'm', 'q', '3985', 'H', 'w', '2055', '9161', 'T', '8415', '95', 'c']
answer:
c595148T16195502wH5893qm


question:
13, 21, ['S', 'R', '5697', '5691', 'M', '3289', 'k', '1397', '4687', '2621', 'J', '6815', '4483', '2645', '5679', '4053', '1681', 'g', 'L', '1171', 'B']
answer:

B1711Lg18613504976554623844