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:
10, 14, ['q', 'M', 'D', 'x', 'L', 'B', '519', '2767', 'P', '3341', '7817', 'Q', 'd', '3819']
answer:
9183dQ71871433


question:
5, 9, ['V', 'G', '4689', 'I', '6573', 'v', '4999', 'V', 'H', 'U', '2383', '489', '8517', 'K', 'A']
answer:
HV9994v3756


question:
6, 16, ['A', 'v', 'S', 'J', 'y', 'L', 'I', '7827', 'F', 'r', '3769', 'G', 'q', '3149', '5427', 'A', 'H', 'C', '5027', 'b', '5245', 'x', 'g', '2543']
answer:

A72459413qG9673rF7287IL