None*"#&'+-0134567;<=>?ADFHKNPQSTV]^j$A multi map of integers to values a. Key        )int-multimap-0.1.1-9r6jxbktrpCEsNKwHgtLtX IntMultiMapmaptoListfromListempty singletonnullsizememberinsertdeleteelemskeyssplit$fIsListIntMultiMap$fFoldableIntMultiMap