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.

[EX Q]: 7, 9, ['5683', 'M', '3363', 'H', '161', '6767', 'w', 'j', 't']
[EX A]: tjw

[EX Q]: 6, 7, ['355', '4183', '3563', '8547', '4351', '6841', '5451', 'H', '8035', 'x', '3305', '4233', 'k', '2155', '9987', 'v']
[EX A]: 15451486

[EX Q]: 1, 4, ['4015', 'V', '7743', 'Q', '4091', 'm', '6915', '7979', 'Z', 'S', '9163', 'X']
[EX A]:
Q3477V5104