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, 2, ['3909', '5863', '707']

A: 36859093
****
Q: 4, 9, ['g', '6285', 'B', 'l', '5153', 'n', '9751', 'X', 'w', '2291', 'S']

A: wX1579n3515l
****
Q: 6, 6, ['e', '9923', '899', '1985', 'Y', 'K', '817', '681', 'O', 'W', '7857', '51', 'w', 'd', '2651', '7365', 'z', '775', '8319', '1679', 'z', 'V', '7847']

A:
K
****