selectiveReplace("abracadabra",
    new Set(1, 'a', 'A'),
    new Set(2, 'a', 'B'),
    new Set(4, 'a', 'C'),
    new Set(5, 'a', 'D'),
    new Set(1, 'b', 'E'),
    new Set(2, 'r', 'F'));