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, 2, ['6099', 'r']

Answer: r


Question: 1, 12, ['2851', 'v', '8871', 'Z', '2227', 'm', 'z', 'B', 'v', '765', '1435', 'V', 'X', 'k', '5955', '2549']

Answer: V5341567vBzm7222Z1788v1582


Question: 1, 19, ['3331', 'A', 'h', 'I', '7111', 't', '2687', 'T', '2855', '1525', 'H', '5109', 'r', '8765', '2901', 'A', '2689', 'Y', 'm', 'Q', '1857', 'n', 'w', '1347', '7031', '7691', 'm', 'I']

Answer:
mY9862A10925678r9015H52515582T7862t1117IhA1333