Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
ひらがな・カタカナで拗音・促音などを表す「ぁぃぅぇぉゕゖっゃゅょゎ」「ァィゥェォヵヶッャュョヮ」は英語で何という？

### Response:

small letter