=== TESTING EACH RUSSIAN LETTER ===

Total letters in system: 30
Letters: 0-9, C, I, X, А, Б, В, Г, Д, Е, Ж, З, И, К, Л, М, Н, О, П, Р, С, Т, У, Ф, Х, Ц, Ч, Ш, Э, Я

✅ А: 14 tags (no filtering)
✅ Б: 11 tags (no filtering)
⚠️  В: had 28 tags, filtered 1, showing 27
✅ Г: 8 tags (no filtering)
✅ Д: 29 tags (no filtering)
✅ Е: 4 tags (no filtering)
✅ Ж: 2 tags (no filtering)
✅ З: 12 tags (no filtering)
✅ И: 30 tags (no filtering)
✅ К: 38 tags (no filtering)
✅ Л: 17 tags (no filtering)
✅ М: 28 tags (no filtering)
✅ Н: 9 tags (no filtering)
✅ О: 42 tags (no filtering)
✅ П: 59 tags (no filtering)
✅ Р: 27 tags (no filtering)
✅ С: 43 tags (no filtering)
✅ Т: 30 tags (no filtering)
⚠️  У: had 14 tags, filtered 1, showing 13
✅ Ф: 16 tags (no filtering)
✅ Х: 3 tags (no filtering)
✅ Ц: 8 tags (no filtering)
✅ Ч: 9 tags (no filtering)
✅ Ш: 3 tags (no filtering)
⚪ Щ: no tags in data
✅ Э: 10 tags (no filtering)
⚪ Ю: no tags in data
✅ Я: 3 tags (no filtering)

=== SUMMARY ===
Working letters: 26
Broken letters (all tags filtered): 0

=== CHECKING SPECIFIC PROBLEMATIC TAGS ===
✅ PASS: в (slug: during)
✅ PASS: в (slug: ctw)
✅ PASS: вверх (slug: up)
✅ PASS: вверх (slug: upstream)
✅ PASS: вел (slug: led)
✅ PASS: вечер (slug: pm)

=== END ===