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.

Q: 1, 4, ['6969', 'P', '8161', '6347', 'P', 'S', 'z']

A: 74361618P9696
****
Q: 2, 10, ['R', 'g', '8909', '6051', '4011', 'T', 'P', '5051', 'u', '6287', '1069', '9051', 'K', 'G', 'o', 'b', '87', 'I', '6941', 'p', '6797', '8081', '6393', '4847', 'q', '8609', '739', 'P', '8443', 'C']

A: 7826u1505PT110415069098g
****
Q: 14, 15, ['S', '9883', 'O', 'K', 'p', 'l', '969', '6647', '2317', 'k', 'G', 'm', 'B', 'e', '6371', '1275']

A:
1736e
****