A big black bug bit a big black bear, made the big black bear bleed blood.
B

Blake's black bike's back brake bracket block broke.
B-TT

The batter with the butter is the batter that is better!
B-TT

Betty Better bought some butter. "But," she said, "this butter's bitter.
If I put it in my batter, it will make my batter bitter.
But a bit of better butter will make my bitter batter better."
So she bought a bit of better butter and made her bitter batter better.
Bl-Bee

One black beetle bled only black blood, the other black beetle bled blue.