1. B
2. type B, group B, blood group, blood type, Bacillus
3. Bacilli, B, eubacteria, eubacterium, true bacteria, B-complex vitamin
4. B complex, vitamin B complex, vitamin B, B vitamin, B, water-soluble vitamin, boron
5. B, atomic number 5, chemical element, element, bel
6. B, sound unit, barn
7. area unit, square measure, B
7. letter, letter of the alphabet, alphabetic character