5 Row Custom iPad Keyboard cydia tweak replaces Russian keyboard and makes it customizable to most countries and languages that are not included in iOS (iPad).
After installing this tweak add 5 Row keyboard by going to Setting > General > Keyboard > International Keyboards > Add new keyboard > choose 5 Row.
4 keyboard rows and its 44 keys can be modified easily by going to Settings > 5RowKeyboard. Enter exact number of characters (shown in parentheses), Update and Respring to use new keyboard. Or you can copy and paste characters from browser, notes, email etc. If number of characters aren’t exact it will still show default Mongolian Cyrillic
Configure options from Settings app.