How do I type 𐌹̈?

Using keyboard layouts in Windows 10.0.28000.1251

Use this page to find out how to type a character on given keyboard or how many keyboards contain given characters.

Tell me how to write using !

The entered characters are as follows:

Hex	Dec	Name		Range	C#	HTML	URL
U+10339	66361	𐌹	GOTHIC LETTER EIS	Gothic	\U00010339	𐌹	%F0%90%8C%B9
U+0308	776	̈	COMBINING DIAERESIS	Combining Diacritical Marks	\u0308	̈	%CC%88

Unfortunately, there is no keyboard layout in Windows 10.0.28000.1251 that would allow you to type all these characters.