Katakana Phonetic Extensions

Block from U+31F0 to U+31FF. This block was introduced in Unicode version 3.2 (2002). It contains 16 codepoints.

The Wikipedia provides the following information on block Katakana Phonetic Extensions:

Katakana Phonetic Extensions is a Unicode block containing additional small katakana characters for writing the Ainu language, in addition to characters in the Katakana block.

Chart at Unicode.org (PDF)
Block at Decode Unicode

1. Katakana Letter Small Ku
2. Katakana Letter Small Si
3. Katakana Letter Small Su
4. Katakana Letter Small To
5. Katakana Letter Small Nu
6. Katakana Letter Small Ha
7. Katakana Letter Small Hi
8. Katakana Letter Small Hu
9. Katakana Letter Small He
10. Katakana Letter Small Ho
11. Katakana Letter Small Mu
12. Katakana Letter Small Ra
13. Katakana Letter Small Ri
14. Katakana Letter Small Ru
15. Katakana Letter Small Re
16. Katakana Letter Small Ro