xkb_keymap {
xkb_keycodes {
	minimum = 8;
	maximum = 255;
	<0>                  = 10;
	<1>                  = 11;
	<2>                  = 12;
	<a>                  = 20;
	<b>                  = 21;
	<c>                  = 22;
};

xkb_types {
	type "FOUR_LEVEL" {
		modifiers= Shift+Control;
		map[Shift]= 2;
		map[Control]= 3;
	};
};

xkb_compatibility {
	interpret.useModMapMods= AnyLevel;
	interpret.repeat= False;
	interpret 0+AnyOfOrNone(all) {
		action= LockGroup(group=2);
	};
	interpret 1+AnyOfOrNone(all) {
		action= LockGroup(group=-1);
	};
	interpret 0x00000001+AnyOfOrNone(all) {
		action= LockGroup(group=1);
	};
	interpret 2+AnyOfOrNone(all) {
		action= LockGroup(group=-2);
	};
	interpret 0x00000002+AnyOfOrNone(all) {
		action= LockGroup(group=2);
	};
	interpret 3+AnyOfOrNone(all) {
		action= LockGroup(group=-3);
	};
	interpret 0x00000003+AnyOfOrNone(all) {
		action= LockGroup(group=3);
	};
	interpret Any+AnyOfOrNone(all) {
		action= LockGroup(group=4);
	};
};

xkb_symbols {
	key <0>                  {	[               0,        NoSymbol,        NoSymbol ] };
	key <1>                  {	[               1,      0x00000001,      0x00000001 ] };
	key <2>                  {	[               2,      0x00000002,      0x00000002 ] };
	key <a>                  {	[               3,        NoSymbol,        NoSymbol ] };
	key <b>                  {	[      0x00000004,        NoSymbol,        NoSymbol ] };
	key <c>                  {	[      0x00000005,        NoSymbol,        NoSymbol ] };
	modifier_map Shift { <0>, <a> };
	modifier_map Lock { <b> };
	modifier_map Control { <c> };
};

};