default alphanumeric_keys
xkb_symbols "numeric keysyms" {
    name[Group1]= "My Awesome Layout";

    key <AD01> { [ 536870909 ] };
    key <AD02> { [ 0x1ffffffe ] };
    key <AD03> { [ 0x1fffffff, 0xffffffff ] };

    modMap Mod1 { 536870909 };
    modMap Mod2 { 0x1ffffffe };
    modMap Mod3 { 0x1fffffff };
    modMap Mod4 { 0xffffffff };
};