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]: 3, 5, ['w', 'i', 'X', '9493', 'g', 'K', 'h', 'X']
[EX A]: g3949X

[EX Q]: 2, 12, ['W', 'R', 'P', '9411', '179', '5175', '7959', 'o', '4285', 'H', '7535', '3423', 'Q', '7813', '611']
[EX A]: 32435357H5824o959757159711149PR

[EX Q]: 2, 22, ['v', '2967', 'b', '4007', 'M', '7203', 'W', '7317', 'm', 'J', 'F', '1783', '4415', '8347', '8405', '4045', 'W', '6565', '9315', '5199', '1653', 'C', 'D', '1249', '5279', '8049', 'X', '8089', 't']
[EX A]:
C3561991551395656W54045048743851443871FJm7137W3027M7004b7692