Btb.
Categories:
- English lemmas
- English nouns
- English countable nouns
- English nouns with irregular plurals
- English indeclinable nouns
- English words without vowels
- English terms spelled with .
- English palindromes
- en:Music
- English abbreviations
- German lemmas
- German nouns
- German terms spelled with .
- German palindromes
- de:Music
- German abbreviations