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]: 1, 3, ['2217', 'i', '6309', '6299', 'z']
[EX A]: 9036i7122

[EX Q]: 1, 2, ['6611', 'A', '8953']
[EX A]: A1166

[EX Q]: 4, 17, ['y', 'h', '1759', '3247', 'k', '9723', 'P', 'o', '1897', '6551', '4551', '3945', 'U', '8121', 'r', 'I', 'v']
[EX A]:
vIr1218U5493155415567981oP3279k7423