The non-Russian letters ө, ү, have the forms of two obsolete letters of Russian Braille. The Mongolian vowel ө (ö) is coincidentally similar in print to the old Russian consonant ѳ (th), and it takes the latter's braille assignment, ⠧; the Mongolian vowel ү (ü) takes the assignment of the old Russian vowel yat, ⠹.