The twenty-sixth letter of the Bulgarian Cyrillic alphabet. Its name is щъ(ʃtɤ) and it has approximately the sound of English sht. It is preceded by Š and followed by Ъ.
The twenty-seventh letter of the Russian Cyrillic alphabet. Its name is щa(šča) and it has approximately the sound of English shh, but pronounced further forward in the mouth. It is preceded by Š(Š) and followed by Ъ.