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, 12, ['f', '8665', '6205', 'L', 'y', 'P', '9351', 'k', '1387', '657', 's', 'k']

A: ks7567831k1539PyL50265668f
****
Q: 2, 2, ['q', 'w', 'D', 'A', '3751', 'G', '2419', 'V']

A: w
****
Q: 1, 14, ['5067', '5291', '1885', 'k', 't', '9541', 'L', 'i', '763', '8383', 's', '1019', 'r', 'c', 'e', '8927', 'u', 'O', 'U', '249']

A:
cr9101s3838367iL1459tk588119257605
****
