Item[KeyEvent["f", Modifiers -> {Control, Shift}],
    FrontEndExecute[{
        FrontEnd`NotebookWrite[FrontEnd`InputNotebook[],
            "[AliasDelimiter]", After]
    }]],

System`MenuKey;
Cases[
    Get @ FrontEndExecute @ FrontEnd`FindFileOnPath[
        "MenuSetup.tr",
        "PrivatePathsTextResources"
    ],
    System`MenuKey[Alternatives @@ CharacterRange["A","z"], _],
    Infinity
] //Sort //Column

MenuKey["a",Modifiers->{"Command"}]
MenuKey["b",Modifiers->{"Command"}]
MenuKey["B",Modifiers->{"Command","Shift"}]
MenuKey["B",Modifiers->{"Control","Shift"}]
MenuKey["c",Modifiers->{"Command"}]
MenuKey["C",Modifiers->{"Command","Shift"}]
MenuKey["C",Modifiers->{"Control","Shift"}]
MenuKey["D",Modifiers->{"Command","Shift"}]
MenuKey["e",Modifiers->{"Command"}]
MenuKey["E",Modifiers->{"Command","Shift"}]
MenuKey["f",Modifiers->{"Command"}]
MenuKey["f",Modifiers->{"Command","Control"}]
MenuKey["F",Modifiers->{"Command","Shift"}]
MenuKey["F",Modifiers->{"Control","Shift"}]
MenuKey["g",Modifiers->{"Command"}]
MenuKey["g",Modifiers->{"Control"}]
MenuKey["G",Modifiers->{"Command","Shift"}]
MenuKey["G",Modifiers->{"Control","Shift"}]
MenuKey["H",Modifiers->{"Command","Shift"}]
MenuKey["H",Modifiers->{"Control","Shift"}]
MenuKey["i",Modifiers->{"Command"}]
MenuKey["I",Modifiers->{"Command","Shift"}]
MenuKey["j",Modifiers->{"Command"}]
MenuKey["k",Modifiers->{"Command"}]
MenuKey["K",Modifiers->{"Command","Shift"}]
MenuKey["l",Modifiers->{"Command"}]
MenuKey["L",Modifiers->{"Command","Shift"}]
MenuKey["m",Modifiers->{"Command"}]
MenuKey["M",Modifiers->{"Command","Shift"}]
MenuKey["n",Modifiers->{"Command"}]
MenuKey["O",Modifiers->{"Command","Shift"}]
MenuKey["O",Modifiers->{"Command","Shift","Option"}]
MenuKey["p",Modifiers->{"Command"}]
MenuKey["P",Modifiers->{"Command","Shift"}]
MenuKey["R",Modifiers->{"Command","Shift"}]
MenuKey["S",Modifiers->{"Control","Shift"}]
MenuKey["t",Modifiers->{"Command"}]
MenuKey["t",Modifiers->{"Control"}]
MenuKey["T",Modifiers->{"Control","Shift"}]
MenuKey["U",Modifiers->{"Control","Shift"}]
MenuKey["v",Modifiers->{"Command"}]
MenuKey["w",Modifiers->{"Command"}]
MenuKey["w",Modifiers->{"Command","Option"}]
MenuKey["x",Modifiers->{"Command"}]
MenuKey["X",Modifiers->{"Command","Shift"}]
MenuKey["z",Modifiers->{"Command"}]
MenuKey["z",Modifiers->{"Command","Shift"}]