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.
Example: 1, 3, ['238', 'h', '92', 'U', '2799']
Example solution: 29h832
Example explanation: Here, concatenating all the elements between the 1st element and 3rd element and then reversing the string gives '29h832'.

Problem: 6, 16, ['6187', 'p', '3575', 'c', 'n', 'w', 'f', 'd', '6263', '8161', '2305', '5217', '5667', '3073', 'a', 'i', 'X', 'g']

Solution: ia370376657125503216183626dfw