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]: 4, 4, ['8393', '8873', '6317', 'N', '2549']
[EX A]: N

[EX Q]: 7, 10, ['4843', 'p', 'I', '8757', '2967', '7461', 'c', '2639', 'p', '8895']
[EX A]: 5988p9362c

[EX Q]: 16, 19, ['y', 'P', '491', 'F', 'Z', '1959', '3051', 'o', 's', '6075', '7157', 'H', 'F', 'K', '7767', '9237', 'h', '7519', 'd', '1609', '223', 'J', '5867', '6325', '9791', '321', 'E', '1155', '4883', 'm']
[EX A]:
d9157h7329