BV

The digraph BV represents the sound /b͡v/, voiced labiodental affricate.

Pronunciation
To pronounce the digraph BV, block the air with your bottom lip and your top teeth and push your diaphragm to create an air pressure. Then, release the air and create friction by keeping your bottom lip close to the top teeth. Not less important, slightly close your vocal chords and vibrate them.

the sound of the digraph BV is basically the sound of the letter B and then the sound of the letter V, but pronounced in a row.